Answer:
B is your answer!
Explanation:
Answer:
I know it is B or C
Explanation:
Whit is biogeographic isolation
Answer:the separation of members of the same species, a group of organisms that breed and produce offspring that can breed.
Explanation:
"Biogeographic isolation refers to the process by which populations of a species become separated from one another by geographical barriers or environmental changes, leading to a reduction or cessation of gene flow between the populations. Over time, this can result in the populations diverging both genetically and phenotypically, potentially leading to the formation of new species.
The geographical barriers that can cause biogeographic isolation include mountains, rivers, glaciers, oceans, and human-made structures like roads and cities. Environmental changes, such as climate change, can also alter the distribution of habitats, effectively isolating populations.
There are several key aspects to biogeographic isolation:
1. Allopatric Speciation: This is the primary mode of speciation associated with biogeographic isolation. It occurs when a physical barrier subdivides a population into two or more groups, which then evolve independently due to differences in their local environments and genetic drift.
2. Vicariance: This is a specific type of allopatric speciation where a widespread species gets divided by a new barrier. For example, the formation of a mountain range or the splitting of a continent can lead to vicariance events.
3. Dispersal: Sometimes, a few individuals from a population may cross a barrier and establish a new population in a different geographic location. If this new population becomes isolated, it may undergo allopatric speciation.
4. Founder Effect: When a small group of individuals becomes isolated from the main population, the genetic diversity of this group is often reduced. The limited gene pool can lead to rapid evolutionary changes in the isolated population.
5. Adaptive Radiation: In some cases, biogeographic isolation can lead to adaptive radiation, where a single ancestral species diversifies into a variety of species, each adapted to a different ecological niche within the isolated environment.
Biogeographic isolation is a fundamental concept in evolutionary biology and ecology, as it helps explain the distribution and diversity of life on Earth. It is one of the main mechanisms by which biodiversity is generated and maintained."
Describe the relationship between biotic and abiotic factors in marine ecosystems
Answer:
Biotic factors include plants, animals, fungi, algae, and bacteria. Abiotic factors include sunlight, temperature, moisture, wind or water currents, soil type, and nutrient availability. Ocean ecosystems are impacted by abiotic factors in ways that may be different from terrestrial ecosystems.
i hope this helps :)
Explanation:
The relationship between biotic and abiotic factors in marine ecosystems is that the abiotic component, which is the light, helps in the formation of the food by photosynthesis by the phytoplankton, and then other organisms take energy from this.
What is the significance of the different components of the marine ecosystem?In the marine ecosystem, there are both abiotic and biotic factors that coexist, for example, in the marine ecosystem, the abiotic components are the sunlight, water, and so on, which aid in the proper development of the biotic components such as phytoplankton, animals, and so on.
Hence, the relationship between biotic and abiotic factors in marine ecosystems is that the abiotic component, which is the light, helps in the formation of the food by photosynthesis by the phytoplankton, and then other organisms take energy from this.
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Please provide a legitimate answer and provide an explanation for the question below.
Patients with thyroid cancer often have their thyroid removed. After this surgery, they take hormone pills for the rest of their lives. Explain why these pills would be necessary.
Answer:
If they have their thyroid removed, they will have nothing in their body to regulate the thyroid hormones, therefore they will need pills to regulate the levels of hormones in the bloodstream
5. A species that has a high rate of long-distance dispersal is more likely to colonize new habitat. But that species may also be less likely to adapt to local conditions, because migration will be stronger than local selection pressures for many loci. In light of those considerations, when do you expect that increasing dispersal might result in the evolution of a larger geographic range, and when might it not?
Answer:
When migrating, the species must adapt to the new arrival sites and each place will have different conditions and special requirements to mate.
On the other hand, if the geographical area is the one that changes, the species will also undergo changes, when the species has long-distance migrations, the final result will not have significant variation, because there are no accumulations of place of variation, so when these changes occur evolution occurs and the most successful species have the best adaptations
Increased dispersal facilitates the expansion of a species' geographic range but may hinder adaptation to local conditions. Species with strong dispersal mechanisms, such as dandelion seeds or mobile animals, are more likely to spread and occupy new areas. Human activities can further influence species dispersal by creating new pathways for colonization or by causing habitat fragmentation.
A species with a high rate of long-distance dispersal is more likely to colonize new habitats, which can lead to an expanded geographic range. However, if migration is stronger than local selection pressures, the species may be less adaptable to local conditions. Increasing dispersal assists in the evolution of a larger geographic range when environments across this range are somewhat similar or when adaptation to highly specific local conditions is less critical for survival. Conversely, in cases where local adaptation is crucial and environments are highly variable, high dispersal rates may not necessarily lead to range expansion, as these species may not well adapt to the wide variety of conditions.
Species with poor dispersal abilities may be at risk of extinction if they cannot move to more suitable habitats when faced with environmental changes. On the other hand, species with greater dispersal mechanisms, like dandelion seeds or mobile animals, are better equipped to spread and occupy new areas, potentially leading to speciation if gene flow is interrupted. This process is affected further by human activities that facilitate the spread of species, either deliberately, like in the case of aquaculture, or inadvertently, through global commerce and recreation.
Finally, the impact of management practices on habitat fragmentation and the ability of species to migrate between habitats must be considered from an organismal perspective. Landscape fragmentation poses significant barriers to species with limited dispersal capabilities, whereas species with higher dispersal abilities may be able to overcome these challenges more successfully.
Which statements about cellular respiration are true? Choose
more than one answer.
Breathing and cellular respiration are unrelated
Cellular respiration is a vital component of the respiratory
system
Individual cells carry out cellular respiration
Cellular respiration is a continuous process
The main purpose of cellular respiration is to create new
cells
An elephant's cells undergo cellular respiration
Following are the true statements about cellular respiration :
Cellular respiration is a vital component of the respiratory system.
Individual cells carry out respiration.
Cellular respiration is a continuous process.
An elephant's cells undergo cellular respiration.
Cellular respiration :Cellular respiration is the process that occurs in every cells (in the mitochondria) of plants and animals to break down sugars in the presence of oxygen that is derived from the breathing process to release energy in the form of ATP.
This process releases carbon dioxide and water as waste products that is exhaled by lungs.
From the above statement, it can be concluded that breathing and cellular respiration are related to each other.
Also each and every cell carry out cellular respiration to get ATP and carry out the normal function.
This fundamental process occurs in plant and animas ( includes elephant).
The purpose of cellular respiration is to get energy in the form of ATP to carry out essential functions of the living cells.
Hence this concludes the correct and incorrect options for cellular respiration.
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True statements about cellular respiration confirm that individual cells carry out the process, it's continuous, and all living things, including elephants, undergo it.
Explanation:When considering which statements about cellular respiration are true, let's clarify some key points. Cellular respiration is the metabolic process happening inside cells where glucose breaks down with oxygen to produce energy in the form of adenosine triphosphate (ATP), water, and carbon dioxide.
Individual cells carry out cellular respiration - This is true as every cell in an organism needs energy from ATP to perform various functions.Cellular respiration is a continuous process - This is true because cells consistently require energy to maintain homeostasis and support life-sustaining reactions.An elephant's cells undergo cellular respiration - This is also true. Like all living organisms, an elephant's cells perform cellular respiration to meet their energy needs.Statements that cellular respiration is a vital component of the respiratory system and that the main purpose is to create new cells are misleading. The respiratory system's role is to provide the oxygen required for cellular respiration and remove carbon dioxide, which is a product of this process. Moreover, the main purpose of cellular respiration is energy production, not the creation of new cells.
Breathing and cellular respiration, while related due to the exchange of gases (oxygen and carbon dioxide), are not the same. Systemic respiration involves breathing and gas exchange in the lungs, while cellular respiration happens at a cellular level, transforming glucose and oxygen into energy.
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A DNA sequence of interest was digested and ligated into the middle of the AmpR gene region of pBR322 vector. The vector also contains a TetR gene which is not interrupted. After introducing the recombinat DNA into bacterial cells, the resulting transformants were tested on a variety of media. Which of the following results would be expected? Group of answer choices Growth on tetracyclin containing media. Death on media containing both tetracyclin and ampicillin. Growth on media containing both tetracyclin and ampicillin. Growth on ampicillin containing media.
Answer:
The following two results are possible:
Option A "Growth on tetracyclin containing media." and
Option B "Death on media containing both tetracyclin and ampicillin."
Explanation:
Since the TetR gene was not interrupted, the bacteria is resistant to the presence of Tetracyclin antibiotic in the media, so yes, it will grow when there is only tetracyclin present. However, when ampicillin is also introduced, the bacteria can no longer grow since its AmpR gene has been rendered non-functional. It is now no longer resistant to the presence Ampicillin and hence, will not be able to grow in its presence.
Hope that answers the question, have a great day!
Transformed E. coli cells with the DNA sequence inserted into the AmpR gene of pBR322 would be expected to grow on tetracycline-containing media but not on media with ampicillin or both antibiotics.
Explanation:In this scenario, where a DNA sequence has been inserted into the pBR322 vector disrupting the AmpR gene, the transformed E. coli cells would exhibit specific growth patterns on media containing antibiotics. Since the AmpR gene is interrupted, the cells would not be resistant to ampicillin anymore, but they would still retain resistance to tetracycline due to the intact TetR gene. Therefore, we would expect the cells to grow on tetracycline-containing media but not on ampicillin-containing media, and they would certainly not grow on media containing both antibiotics.
Which of the following best compares the rules of the reproductive Stuctures found an angiosperm
Answer: The correct answer would be A
The male stamens hold the pollen, the female pistil holds the ovule, and the petals attract pollinators.
Explanation:
From a protein assay, you determine that your sample of purified protein contains 3 mg protein/mL. You need to prepare a sample for SDS-PAGE. The final volume of the sample for SDS-PAGE should be 24μL and the final concentration of sample buffer in the SDS-PAGE sample should be 1X. You would like to load a total of 15μg of your purified protein on the gel. Determine the volume of the purified protein, volume of 6X sample buffer, and volume of water needed to prepare a sample for SDS-PAGE (recall final volume should be 24μL).
Answer: 0.12 μL of purified protein, 4 μL of a 6X sample buffer, 19.88 μL of water.
Explanation:
The law of conservation of mass is used to solve this problem. It indicates that mass is neither created nor destroyed, it is only transformed. In a chemical reaction the sum of the mass of the reagents is equal to the sum of the mass of the products. It can be written as:
Concentration 1 x Volume 1 = Concentration 2 x Volume 2
1= initial values
2= final values
The concentration of the protein is 3mg/mL, we need to load a total of
15 μg/mL (0.015 mg/mL), and we know the final volume should be 24μL. So we calculate this as:
3mg/mL x Volume 1 = 0.015 mg/mL x 24 μL
Volume 1 = 0.12 μL.
This means, we should use 0.12 μL of te solution that contains 3 mg of proteins/mL.
The same equation is used to calculate the amount of sample buffer which is 6 times concentrated (6X)
6X x Volume 1 = 1X x 24 μL
Volume 1 = 4 μL,
This means, we should use 4 μL of a 6X sample buffer.
So far we have 0.12 μL of protein + 4 μL of sample buffer. Since the final volume is 24 μL, we must add a quantity of water in order to reach that final volume.
24 μL - 0.12 μL - 4 μL = 19.88 μL of water,
Different warbler species share the same food source. They have adapted by living in different areas of trees to reduce competition. What is this an example of?
Answer:
It is an example of co-evolution.
Explanation:
The situation given in the question is an example of co-evolution which can be described as two or more different species sharing a common habitat and affecting each others evolutionary process in different ways.
I hope this answer helps.
PLZ HELP NOW 50 POINTS 3 QUESTIONS ANSWER ALL QUESTIONS
also sorry i accidentally picked biology i meant English all questions come from this poem
1. What extraordinary power does the narrator attribute to the “wind-bird” in this poem?
Question 1 options:
a)
The ability to tuck its glittering beak in a white wing
b)
To control the winds blowing from the north
c)
To sing while it builds its nest
d)
To summon the clouds from the north
-------------------------------------------------------------------------------------------------------------------
2. Which excerpt below is an example of a simile?
Question 2 options:
a)
“white clouds…begin to fall into the world below like stars"
b)
“that has turned itself into snow”
c)
“all the singing is in the tops of the trees”
d)
“But his big, round music, after all, is too breathy to last.”
-------------------------------------------------------------------------------------------------------------------
“Like any of us he wants to go to sleep…” is an example of which literary technique?
Question 3 options:
a)
Metonymy
b)
Alliteration
c)
Personification
d)
Imagery
-------------------------------------------------------------------------------------------------------------------
3. What magical events happen from stanzas six through nine of this poem? Be sure to describe the events completely.
It cannot open the file
In peas the flower color and pollen length genes are very close together on the same chromosome. Purple flowers (P are dominant to white (p), and long pollen (L) is dominant to short pollen (l). A true breeding variety of peas with purple flowers and short pollen is crossed to a true breeding variety with white flowers and long pollen. The F1 plants are then self-crossed to produce an F2 generation.
Required:
a. What is the genotype and phenotype of the F1 generation?
b. What proportion of the F2 will have purple flowers with long pollen?
c. What proportion will have white flowers and short pollen?
Answer:
Explanation:
Purple flowers (P are dominant to white (p), and long pollen (L) is dominant to short pollen (l).
A true breeding variety of peas with purple flowers and short pollen is crossed to a true breeding variety with white flowers and long pollen.
Parent genotype PPll x ppLL
F1 genotype will be PpLl
self crossing of F1 PpLl x PpLl
b. What proportion of the F2 will have purple flowers with long pollen?
Pp x Pp = 3/4 purple flowers, 1/4 white flowers
Ll x Ll = 3/4 long pollen, 1/4 short pollen
Thus answer is 3/4 x 3/4 = 9/16 purple flowers with long pollen
c. What proportion will have white flowers and short pollen?
thus, answer is 1/4 white flowers x 1/4 short pollen = 1/16.
A chef sprays antimicrobial cleaner on her counter top. At the first, the bacteria population declines significantly. However, even though she continues to spray in following weeks, the number of bacteria begins to increase again. Why did this happen? After the application of antimicrobial spray, the bacteria needed to adapt by developing antimicrobial spray-resistant traits. Some bacteria had traits that allowed them to survive the initial antimicrobial application. They produced offspring also carrying those traits. The antimicrobial compound caused a mutation for resistance to it. This trait increased in the population over time. The bacteria that tried hardest to become resistant left more offspring, who were also resistant.
Answer:
Bacteria that carried the traits for antimicrobial resistance were able to pass on the trait to their offspring
Explanation:
Populations of organisms that are able to be resistant to pesticides have acquired this due to the ability to properly breakdown the chemicals or package it and discard of it effectively.
Bacteria populations typically multiply very quickly and many mutations arise. Some of these mutations are fortunate adaptations to the very agent that is meant to kill them. These mutants that are able to survive antimicrobial treatment will be able to pass these on to their prodigy.
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Compare and contrast a high pressure and a low pressure system.
Answer:
High pressure systems entail sinking air, while lows entail rising air. High pressure systems form where air converges in the higher levels of the atmosphere. The converging air has nowhere to go and is forced to sink toward the ground. ... In contrast, low pressure systems form where air near the ground converges.
Explanation:
Hope this helps :)
A biologist exposes mice to mutagenizing X rays to generate an array of different mutants. He hopes to generate a mutant form of acetylcholinesterase that will be functional at normal body temperature but inactive at a higher temperature. Which step below would work as an initial screening step in the biologist's quest to eventually identify a mutant of this type?
Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during an induced fever.
Look for mice that develop hyperactivity and rapid muscle movements as their body temperature changes from normal to the higher temperature of an induced fever.
Look for mice with a normal response to loud noise that become more easily startled by the same noise stimulus as their body temperature rises during an induced fever.
Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop an inability to contract muscles during an induced fever.
Answer:
The correct option is B:
"Look for mice that develop hyperactivity and rapid muscle movements as their body temperature changes from normal to the higher temperature of an induced fever."
Explanation:
The enzyme acetylcholinesterase is responsible for the breakdown of acetylcholine which is a neurotransmitter. Once the enzyme is inactivated at a higher temperature, it will cause acetylcholine to build up in the synapse. This will lead to a continued stimulation of its target receptors that can result in seizures, and hence, this will be the case with the mice who have the mutant form of acetylcholinesterase enzyme.
Hope that answers the question, have a great day!
The step that will be required to identify the mutant will be A. Look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during an induced fever.
In biology, it should be noted that a mutant simply means an organism that arises as a result of mutation. It's an alteration of the DNA sequence.
Based on the information given, to identify the mutant, it's important to look for mice with normal muscle contraction–relaxation activity at normal body temperature that develop continuous muscle contraction during induced fever.
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Explaining the causes of ocean currents What factor causes surface ocean currents
1. Explain how primate hand features increase fitness and give one example. When writing about your example name the hand feature that you have chosen and explain clearly why it increase fitness in a tree environment.
2. Conjecture what would happen if a primate infant did not possess your chosen primate hand features. Answer this question with the survivability of the infant in mind.
Answer:
1. Opposable thumbs are one of the characteristics of the primates that enhances their fitness. The thickest digit found in the hand is the thumbs that possess the tendency to rotate and move in distinct orientations in comparison to other digits. This makes the primates possess the tendency to hold the objects with the help of their hands in comparison to other animals that can only hold objects like food with the help of their mouth.
2. In case, if a primate infant fails to possess opposable thumbs, then it would become much tougher for him or her to pick the objects. With practice and time, the individuals would develop the habit of holding things with the help of other digits of the hand, however, the grasping power will not be that much or it can be said that such individuals would fail to exhibit strong grasping power.
Opposable thumbs in primates increase fitness by enhancing tree climbing ability, offering access to food, shelter and safety. Without this feature, a primate infant's survivability would be compromised due to challenges in accessing these resources.
Explanation:Primate hand features, specifically opposable thumbs, improve their fitness by enhancing their ability to grasp objects, especially tree branches. The opposable thumb in primates, a feature that allows the thumb to touch the other digits on the same hand, enables the primates to climb trees with more precision, improving their survival in tree environments by providing them a space to live, protection from ground predators, and access to food resources.
If a primate infant did not possess this specific feature, it would limit its ability to effectively grasp and climb trees, seriously compromising its survivability. Inability to climb trees would mean limited access to essential resources like food and shelter leading to higher susceptibility to predation and malnutrition.
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For your post you must choose one example of how your chosen primate species communicates. Name the species and and give one example. You must describe one way that your species communicates (There are many things that are considered communication such as gestures, vocalizations etc.) You must explain what your species communicates (e.g. hunger, fear etc.) You must also explain how communication increases fitness within the species that you choose. In your answer make sure you explain what fitness means. Clearly explain how your chosen mode of communication would enhances fitness within your chosen species.
Answer:
Explanation:
Lets take an example of human primates -they communicate in a diverse way in their life cycle using gesture ,posture ,vocals ,expressions etc . The the humans are in their infant stage they cry when they feel hunger . No one teaches them to do so these are naturally done by then through natural instincts .They expresses their anger by making sounds . As we grow up we use all of our sense organ to communicate with the organisms and the environment . We uses verbal as well as non verbal communication depending upon the need . Human primates uses diverse ways to communicate ,visual expressions and gestures also speak alot .
communication increases fitness within the species as they talk about their need . Through communication only relationships and interactions established among primate. This can be used to communicate information among members of a troop that can increase the fitness of a collective group . As we know that as a community we share responsibilities ,so if the communication is strong life expectancy increases in many primates (such as monkey , tigers and dears ) .
Consider the scenarios described below. Match the concept described by the scenario with the theory.
Five lizards were moved from Lost Island to Fantasy Island (which was devoid of this species of lizards). Within 35 years the lizards on Fantasy Island have larger heads and stronger bites then those on Lost Island, reflecting a diet higher in plant material then at Lost Island.
Geologists who study rock formations, water movements, and mountain formations use the phrase 'The present is the key to the past".
A group of rats is trained to correctly run a maze. The first rats would get the maze wrong 165 times before running it perfectly. After a few generations, the rats could run the maze only 20 times before learning it correctly.
An investigator considers fossils in the strata in the rocks throughout a continent. It is noted that a very large number of species disappeared from the fossil records about 65 million years ago. It is proposed that a large asteroid impact in the area lead to mass extinction.
The options are: gradualism, uniformitarianism, catastrophism, Scala Naturae, natural selection, inheritance of acquired characteristics
Answer:
1 - natural selection
2 - uniformitarianism
3- inheritance of acquired characteristics
4 - catastrophism
Explanation:
1. Natural selection refers to the evolution of organism or changes in the characterstics of organism depending on the environmental conditions. Hence, the lizard moved on fantasy island evolved with larger head and stronger bites as per the environmental condition.
2. The concept of Uniformitarianism states that the natural geological processes happening in present have already occured in past with same intesity and rate. Hence, geologist uses the phrase "The present is the key to the past" for formation of mountain, rock formation and water movements.
3. Inheritance of acquired characteristics are the characteristic acquird by the ancestors and transmitted that gradually acquired characteristic to their progeny. Hence, the rats acquire the charactieristics and transfered it to the next generations.
4. Catastrophism means the regular occurrence of meteorological and geological disturbances to explain the existence the fossil record. Hence, teh mass exticiton due to asteroid impact is an example of Catastrophism.
So, the correct options in sequential order is natural selection, uniformitarianism, inheritance of acquired characteristics, and catastrophism.
Which best describes the meaning of this poem? "Treat the Earth well. It was not given to you by your parents; it was loaned to you by your children. We do not inherit the Earth from our ancestors; we borrow it from our children." -Ancient Native American Proverb
Our parents gave us the Earth.
We need to think about how what we’re doing to the environment now will impact our kids and their kids and their kids.
We need to think about the needs of humans now, because we inherited the Earth and can do with it what we want.
We should be good to the Earth because that’s what our ancestors wanted.
Answer:
Treat the Earth well, don't pollute it, etc because we need to keep it in god shape for our posterity so that they can live happily on a clean and healthy Earth.
Explanation:
The poem's main idea is that we need to consider how our current environmental actions will affect our children, their children, and their children. So, the correct option is B.
What is an Environment?All living or non-living objects that occur naturally, or in this example, without the use of artificial means, belong to the natural surroundings or natural world. The phrase is most frequently used with reference to Earth or certain regions of it.
Environment can be summed up as the effects of all the living and non-living things that have an impact on human life. Non-living or abiotic elements are water, land, sunshine, rocks, and air, whereas all live or biotic components are animals, plants, woods, fisheries, and birds.
The poem's major point is that we should think about how our current environmental practices will influence our children, their children, and their children, as illustrated by the aforementioned scenario.
Therefore, the correct option is B.
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Which are functions of a mammal’s nervous system? Check all that apply. learning and memory gas exchange movement and coordination information processing blood circulation
Answer:
A C D
Explanation:
i just did it ong
Answer
coordinates movement
receives information about the environment
learn and remember
Explanation:
If a field population started with 50% standard (YY) plants and 50% yellow-green (yy) plants, how would you expect the frequencies of the two alleles (Y and y) to change in future generations? Base this answer on your conclusion in question 3. Note: Exact frequencies are not needed to answer this question, but in relative terms, what changes, if any, do you expect with allele frequencies.
The future frequencies of Y and y alleles will depend on factors like natural selection, genetic drift, mutation, and migration, leading to dynamic changes in allele frequencies over generations.
Given the initial population with 50% standard (YY) plants and 50% yellow-green (yy) plants, the future frequencies of the two alleles (Y and y) will be influenced by factors such as natural selection, genetic drift, mutation, and migration. Without specific details on these factors, we can make some general predictions based on population genetics principles.
If the standard (YY) plants have a selective advantage in the environment, natural selection may favor their reproduction, leading to an increase in the frequency of the Y allele over generations. Conversely, if the yellow-green (yy) plants possess an advantageous trait, the frequency of the y allele may increase.
Genetic drift, which involves random changes in allele frequencies due to chance events, could also play a role, especially in smaller populations. This might result in fluctuations in allele frequencies over time.
Mutations introduce new alleles into a population. If a mutation occurs favoring one allele over the other, it could impact the overall allele frequencies.
Migration of individuals into or out of the population can introduce new alleles or remove existing ones, influencing the allele frequencies.
In summary, the future frequencies of the Y and y alleles will be dynamic and depend on the interplay of evolutionary forces such as natural selection, genetic drift, mutation, and migration within the population.
The neural pathway represents the nerves that connect the sense organs to the brain what happens along the neural pathway when the eye sees apple
Answer:
The visual cortex in the brain processes the signals to create the perception of vision.
Explanation:
Hope this helps.
The visual cortex while the mind processes the alerts to create the notion of vision, whilst the eyes sees the apple.
The Ophthalmic nerve is responsible for the actions of eyes, ophthalmic nerve is accountable for the neural pathway connection.
Neural pathwaysNeural pathways are the companies of nerve fibers which bring records among the numerous elements of valuable frightened system.Neural pathway is the connection formed by axons that projects from neurons to make synapses onto neurons in another location , to enable a signal to be sent from one region of the nervous system to the another.Neurons are connected by the axons or by the bundle of axons known as nerve tract.
Thus, the visual cortex creates the alert to creates the perception through the eye after seeing the apple.
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You are studying a population of snapdragon plants on Membata Island. In snapdragons, the dominant allele CR encodes red flowers and the recessive allele CW encodes white flowers. Plants with a heterozygous CRCW genotype have pink flowers. You have counted 10,000 snapdragon plants on Membata Island. You have recorded that 9025 plants have red flowers, 950 plants have pink flowers, and 25 plants have white flowers. If this population is at a Hardy-Weinberg equilibrium, what are the values of p and q in this population
Answer:
we will know that the allelic frequencies are for R 0.95 and r 0.05
Explanation:
We know that the population is in Hardy-Winberg equilibrium, we deduce the following formula:
p + q = 1
p2 + 2pq + q2 = 1
data
R: red flower allele
r: allele blor blanca
p would be equal to the allelic frequency R
q will be equal to the frequency allelic r
2p = RR
2q = rr
2pq = Rr
If there are 25 white flowers in 1000 plants, their frequency will be:
2pq frequency of the Rr genotype
white flower = 25/10000 = 0.0025 = rr = 2q = 0.0025
we deduce that q is equal to 0.05
we replace the data with the previous formula
p + q = 1
p = 1-0.05
we get as a result
p = 0.95
if p = 0.95 and q = 0.05
we will know that the allelic frequencies are for R 0.95 and r 0.05
Answer:
p = 0.95, q = 0.05
Explanation:
dominant allele CR encodes red flowers = p
the recessive allele CW encodes white flowers = q
Plants with a heterozygous CRCW genotype have pink flowers = 2pq
There are 10,000 snapdragon plants on Membata Island. 9025 plants have red flowers, 950 plants have pink flowers, and 25 plants have white flowers.
To find p = (9025 + 950/2) / 10000 = (9025 + 475) / 10000
p = 0.95
TO find q, use this formular: p+q = 1 since p = 0.95
q = 1-0.95 = 0.05
dentify and briefly discuss each mechanism ensuring against simultaneous fatty acid synthesis and oxidation in the same cell. Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp A key intermediate in fatty acid synthesis, , carnitine acyltransferase I, thereby blocking the entry of fatty acyl units into the mitochondrion for oxidation. The substrates for fatty acid oxidation, , inhibit fatty acid synthesis by interfering with the polymerization of acetyl-CoA . Hormonal effects on adipocytes are opposed: promotes fatty acid by several mechanisms; promotes fat breakdown and fatty acid .
Answer:
Malonyl-CoA, a key intermediate in fatty acid synthesis, inhibits carnitine acyltransferase I, thereby blocking the entry of fatty acyl units into the mitochondrion for oxidation.
Fatty acyl-CoAs, the substrates for fatty acid oxidation, inhibit fatty acid synthesis by interfering with the polymerization of acetyl-CoA.
Hormonal effects on adipocytes are opposed; insulin promotes fatty acid synthesis by several mechanisms; while glucagon promotes fat breakdown and fatty acid oxidation
A ball is tossed up in the air. At its peak, it stops before beginning to fall. The ball at its peak has
kinetic energy only
light
4:07
potential energy only.
Tools
both kinetic and potential energy.
D)
neither kinetic or potential energy.
Answer:Potential energy only
Explanation:
The energy the ball possess at it peak height before beginning to fall is potential energy only
The application of evolutionary theory to the debate over modern origins focuses on which process of evolution? A. natural selection B gene flow C genetic drift D mutation
Answer:
D) mutation
Explanation:
The Theory of evolution was given by Charles Darwin in 1859 which suggested that Evolution is the result of the natural selection is the mechanism of evolution.
At the time of Darwin, the DNA and genes were not discovered but only the idea began to come into existence by Mendel.
Later the scientist merged Evolution and Mendel's Theory of inheritance and found that the natural selection takes place at the level of DNA and genes. This theory is known as the modern synthesis Theory. The natural selection takes place due to mutations in the gene which refers to the change in the sequence of DNA due to many factors. These mutations are then selected by nature based on the environment.
Thus, Option-D is the correct answer.
Throughout the Earth's history, there have been long periods of time when glaciers and ice sheets cover large parts of the Earth. What are these periods called?
Answer:
Ice Ages
Explanation:
It might be too obvious to be the right answer but that's all I can think of.
Robert and Susan are married and have 2 children, one son and one daughter. The children have different hair colors and eye colors. Which of the following statements explains these
differences in the children?
A) The environment affects these children before their birth
B) Hormone changes in a pregnant woman's body cause traits to develop differently in fertilized egg
C) Sexual reproduction produces fertilized egg that has a unique genetic make-up
D) There is a lack of variation in the genes of the parent's sex cells
The varying physical traits, such as hair and eye color, in Robert and Susan's children are due to the unique combination of genetic information from each parent through sexual reproduction. The differences are attributed to the distinct set of alleles each child inherits, not environmental factors or epigenetic influences in this context.
Explanation:The differences in hair and eye color between Robert and Susan's children can be explained by the unique genetic makeup that results from sexual reproduction. Each child inherits 50% of their genes from each parent, giving them a combination of traits that can result in varying hair and eye colors. The correct statement is C) Sexual reproduction produces fertilized egg that has a unique genetic make-up.
During sexual reproduction, the egg and the sperm each contribute 23 chromosomes, which contain DNA sequences known as genes. These genes have variations referred to as alleles, determining different traits, such as hair color and eye color. As siblings receive a different combination of alleles, this accounts for the varied physical appearance between them, despite having the same parents.
While environmental factors and epigenetics can influence the expression of certain traits, the primary reason for the differences between the children's hair and eye colors is their unique genetic composition derived from their parents' reproductive cells.
Final answer:
The differences in hair and eye colors in Robert and Susan's children are due to the unique genetic make-up resulting from sexual reproduction. Each child inherits a mix of alleles from their parents, leading to individual expression of traits.
Explanation:
When it comes to explaining why Robert and Susan's children have different hair colors and eye colors, sexual reproduction is the key factor. Sexual reproduction results in a fertilized egg that has a unique combination of genetic make-up from both parents. Since humans reproduce sexually, each child inherits a distinctive set of genes, comprising 50% from the mother and 50% from the father. The variance in traits like hair and eye color arises from different combinations of the alleles (versions of genes) inherited from each parent.
Each parent contributes one allele for every gene to their offspring. These alleles can be the same or different between siblings, which is why brothers and sisters may not have the same eye or hair color, even though they have the same parents. The fertility process also involves the healthy functioning of the parents' reproductive systems, including hormone regulation to produce and release gametes correctly.
Therefore, the correct answer to the question is (C) Sexual reproduction produces fertilized egg that has a unique genetic make-up.
Pueden dos individuos con distinto genotipo tener el mismo fenotipo? en que casos?
Translation-Can two individuals with different genotypes have the same phenotype? in which cases?
Answer:
Yes. This is possible due to dominant allele.The phenotypic manifestation in an individual is as a result of genotypic combination or interaction. The genotype combination of a dominant allele on homologous chromosomes reflects dominance when the two allele are dominant(TT) or the other is heterozygote dominant (Tt).Thus they exhibit same phenotype ; tallness, since they are both tall,(T-represented) dominance but different gene combination (Tt ,TT.)
Thus, it is only in the absence of dominant allele that the recessive allele can be manifested, or if two recessive allele are inherited from each of the parent,as tt - homozygous recessive.
External respiration includes expelling co, from cells in the body.
True or false?
Answer:
False
Explanation:
External respiration includes expelling CO2 from the cells. The absorption of oxygen into individual cells is part of respiration. Air entering the lungs is filtered through the pharynx. The lungs contain elastic muscle tissue to permit inhalation.