Answer:
Explanation:
The genes in DNA encode protein molecules, which are the "workhorses" of the cell, carrying out all the functions necessary for life. For example, enzymes, including those that metabolize nutrients and synthesize new cellular constituents, as well as DNA polymerases and other enzymes that make copies of DNA during cell division, are all proteins.
In the simplest sense, expressing a gene means manufacturing its corresponding protein, and this multilayered process has two major steps. In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription. During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed to form mature mRNA (Figure 1). The resulting mRNA is a single-stranded copy of the gene, which next must be translated into a protein molecule.
During translation, which is the second major step in gene expression, the mRNA is "read" according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins (Figure 2). Each group of three bases in mRNA constitutes a codon, and each codon specifies a particular amino acid (hence, it is a triplet code). The mRNA sequence is thus used as a template to assemble—in order—the chain of amino acids that form a protein
But where does translation take place within a cell? What individual substeps are a part of this process? And does translation differ between prokaryotes and eukaryotes? The answers to questions such as these reveal a great deal about the essential similarities between all species.
Final answer:
Transcription and translation are the two main processes in protein synthesis. Transcription produces a complementary mRNA from the DNA template, and after processing, the mRNA is used in translation to form a protein. Protein synthesis involves initiation, elongation, and termination, followed by mRNA processing, translation, and folding of the polypeptide.
Explanation:
Overview of Transcription and Protein Synthesis
Protein synthesis begins with the critical process of transcription, during which a segment of DNA is used to create a complementary mRNA molecule. This occurs in the following steps:
Initiation: Transcription factors and RNA polymerase bind to DNA at the promoter region of a gene, unwinding the DNA strand.
Elongation: RNA polymerase moves along the DNA template strand, adding complementary RNA nucleotides to grow the mRNA strand.
Termination: The RNA polymerase reaches a stop signal in the DNA sequence and releases the newly synthesized mRNA strand.
In eukaryotes, the new mRNA undergoes processing which may include splicing, editing, and polyadenylation.
The processed mRNA then travels out of the nucleus into the cytoplasm.
Once in the cytoplasm, translation takes place:
A ribosome attaches to the mRNA.
Transfer RNA (tRNA) molecules with attached amino acids recognize specific codons on the mRNA through their anticodons and bind to the mRNA, bringing the appropriate amino acids into place.
As the ribosome moves along the mRNA, amino acids are joined together forming a polypeptide chain.
The folding of the polypeptide into its functional three-dimensional structure results in the final protein.
Which of the following statements is true?
A. In the lytic cycle, the virus hides in the host’s DNA.
B. Stress can cause a virus to switch from the lytic cycle to the lysogenic cycle.
C. Stress can cause a virus to switch from the lysogenic cycle to the lytic cycle.
D. In the lysogenic cycle, the virus uses the host cell to make new viral parts.
the answer would be C. :)
Answer:
C is correct
Explanation:
The virus cannot live in the environment without the host cell. They need the host cell for their survival.The virus incorporates its genetic material in the genetic material of the host cell to live. They opt for lytic cycle or lysogenic cycle.
Due to environmental stressors such as the starvation or exposure to chemicals may cause the virus to switch from the lysogenic cycle to lytic cycle.
An electromanget converts electrical enegry into
an electromagnet converts electrical energy into mechanical energy.
Your classmate is trying to determine the rate of photosynthesis for a fern plant growing in his or her backyard. Your classmate wants to set it up in a way for it to have a high photosynthesis rate. Which of the following setups has the highest photosynthesis rate?
A. High intensity of light, low levels of carbon dioxide, high temperature level
B. Medium intensity of light, low levels of carbon dioxide, extremely high temperature level
C. Low intensity of light, medium levels of carbon dioxide, low temperature level
D. High intensity of light, high levels of carbon dioxide, moderate temperature level
Answer:
D. High intensity of light, high levels of carbon dioxide, moderate temperature level
Explanation:
Photosynthesis is the process by which plants make their own food.
photosynthesis to happen, there must be light, carbon dioxide and chlorophyll.
For the experiment to go through well, then the class mate has to provide sufficient supplies of requisite elements for photosynthesis.
Therefore enough supply of light, water, carbon dioxide and chlorophyll.
Answer:
D
Explanation:
Why doesn't semen enter the urinary bladder during ejaculation? Why doesn't semen enter the urinary bladder during ejaculation? The smooth muscle sphincter at the base of the urinary bladder closes. There is no common duct between the reproductive system and the urinary system. Ejaculation is a parasympathetic reflex resulting in no response by urinary contraction muscles. There is no urge to urinate during sexual intercourse because of the suppression of LH by testosterone buildup in the blood.
Semen does not enter the urinary bladder during ejaculation because of the internal sphincter. The internal sphincter is a ring of muscle that surrounds the urethra, the tube that carries urine and semen out of the body.
During ejaculation, the internal sphincter contracts tightly, preventing semen from entering the bladder.
The internal sphincter is controlled by the autonomic nervous system, which is the part of the nervous system that is not under conscious control. This means that we cannot control the internal sphincter voluntarily.
The internal sphincter is also closed by the bladder neck, which is a narrowing of the urethra at the point where it joins the bladder. The bladder neck relaxes during ejaculation, allowing semen to pass through the urethra and out of the body.
If the internal sphincter or bladder neck were to relax during ejaculation, semen could enter the bladder. This is a condition called retrograde ejaculation. Retrograde ejaculation is relatively rare, but it can be caused by certain medications, surgery, or nerve damage.
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The image above is that of one hemisphere of a sheep brain which is very similar to that of a human brain. The pins are placed in 3 internal structures of the brain. Which answer choice below is INCORRECT concerning these structures?
A) The red pin is placed in the thalamus.
B) The blue pin is placed in the cerebellum.
C) The medulla oblongata is not labeled with a pin.
D) The green pin is placed in the lateral ventricle.
Answer:
B)
The blue pin is placed in the cerebellum.
Explanation:
Answer: Option B
Explanation:
The red pin is placed in the thalamus region. This region helps in sending receiving all the sensory information from the stimuli and transferring it to the cerebral cortex part of the brain for the processing of information.
The green pin lies in the region of lateral ventricle are two ventricles in the brain which contains cerebrospinal fluid which provides protection to the brain and acts as cushion of the brain.
The blue colored pin is placed in the cerebellum. It is the correct option.
What is the dependent variable that impacts the amount of solar energy in a location. I really need help with question.
Answer: Hours or time of light exposure
Explanation: The longer exposure time, the greater the amount of solar energy transferred per unit of space. I think that make sense.
Answer:
Nearness to equator or geographical position
Explanation:
Due to Earth’s spherical shape, the sun rays with high intensity falls on the equator. Therefore if a place is located away from the equator, it will receive low intensity sun rays.
Countries like India which lie at close proximity to the equator get solar energy in sufficient amount. Such countries are able to harness electricity from solar energy due to its high intensity.
Therefore , Nearness to equator or geographical position is the dependent variable that impacts the amount of solar energy in a location.
Imagine the autosomal dominant CB allele produces black coat color in dogs, and the recessive Cw allele produces a white coat color. The CB allele is also recessive for lethality; pups with the CBCB genotype die well before birth, and their remains are resorbed by the mother’s uterus. Imagine you cross heterozygous black male dog with a heterozygous black female. What ratio of genotypes and phenotypes do you expect to see in the F1 offspring? If more than one genotype produces the same phenotype, list all the genotype/phenotype combinations separately.
Answer:
the ratio of genotypes will be 2:1 (CBCw:CwCw) and the phenotype ratio will be 1:1 (black dog:white dog)
Explanation:
If heterozygous black male dog is crossed with a heterozygous black female then:
P: CBCw x CBCw
F1: CBCB CBCw CBCw CwCw
Since CBCB genotype will die before birth, the ratio of genotypes will be 2:1 (CBCw:CwCw) and the phenotype ratio will be 1:1 (black dog:white dog).
CBCw genotype, which is heterozygous will produce black phenotype, since the allele CB is dominant over Cw allele.
This is an image of the phospholipid bilayer. Based on what you know about the structure of the phospholipid bilayer, what is the name of the side labeled 1?
A. Hydrophobic side
B. Inner side
C. Hydrophilic side
D. Permeable side
I think the answer is D (permeable side )since the phospholipid bilayer is permeable and 1 shows the whole of it
Since 2is the hydrophobic side cancelling A
3 is the hydrophilic side also cancelling C
And neither is the answer B because not any of the sides shown between a and b shows that it’s in the inner side
Answer:
D. Permeable side.
Explanation:
Phospholipid bilayer constitutes a part of the structure of the cell membrane. This bilayer consists of a phosphate group and two chains of fatty acids. The phosphate group is polar and hydrophilic because of its negative charges. Its hydrophilic nature shows that it is attracted to water molecules. Also, the lipid tails constitutes the chains of fatty acids are non-polar, hydrophobic and lack ions. The hydrophobic nature of the lipid acids indicates that they repel water molecules.
From the diagram, the part labelled 1 is the phospholipid bilayer and it has a permeable side. This means it allows substances to pass through it.
Black hair is dominant over blonde hair. A father with black hair reproduces with a female with blonde hair. What are the chances the child will have black hair? What are the chances the child will have blonde hair? You need to answer the question by constructing Punnett square(s) and determine the resulting phenotypic percentages.
Answer: Hard to say, assumable 50/50, child will still carry recessive gene.
Explanation: Dark haired genes are dominant meaning if your child gets one piece of a gene(s) from parent Bk that is(are) dominant, they will likely have or develop dark hair as the recessive gene(s) are overpowered. This is why some children are born with blonde or light hair that develops into dark brown/black as they age.
Theoretically, Parent Bk would have to have a part of a blonde recessive gene(there are multiple genes but even one is enough) to give to a child in order for them to have blonde hair. Or, the gene(s) they receive from parent Bk malfunctions and the recessive gene(s) from parent Bd is(are) the only one(s) expressed making the kid blonde. If the father has black hair and nobody in his family or ancestry has blonde hair, then there is still a chance that the child could get blonde hair depending on the mother. Because we don’t know for sure what alleles parent Bk has, you could end up with children who all have dark hair(not explicitly black but dark) or 50/50 dark/light
The chances for the child to have black hair are 2 out of 4, or 50%. Similarly, the chances for the child to have blonde hair are also 2 out of 4, or 50%. Therefore, based on the Punnett square analysis, there is a 50% chance for the child to have black hair and a 50% chance for the child to have blonde hair.
To determine the chances of the child having black or blonde hair, we can use a Punnett square to represent the possible combinations of alleles from the parents. In this case, we'll assume that black hair is determined by a dominant allele (B), and blonde hair is determined by a recessive allele (b).
The father with black hair would have the genotype Bb, where B represents the dominant allele for black hair and b represents the recessive allele for blonde hair.
The mother with blonde hair would have the genotype bb, having two copies of the recessive allele for blonde hair.
Now, let's construct a Punnett square to determine the possible genotypes and phenotypes of the offspring:
From the Punnett square, we can see that there are four possible combinations of alleles for the child: Bb, Bb, bb, and bb.
The genotypes Bb and Bb would result in black hair, as they have at least one copy of the dominant allele (B).
The genotypes bb and bb would result in blonde hair since they have two copies of the recessive allele (b).
So, from the Punnett square, the chances for the child to have black hair are 2 out of 4, or 50%. Similarly, the chances for the child to have blonde hair are also 2 out of 4, or 50%.
Therefore, based on the given information and Punnett square analysis, there is a 50% chance for the child to have black hair and a 50% chance for the child to have blonde hair.
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Which of the following statements is most consistent with F.E. Clements' integrated hypothesis? A) Species are distributed independently of other species. B) Communities lack discrete geographic boundaries. C) The community functions as an interactive unit. D) The composition of plant species seems to change on a continuum. E) The community is a chance assemblage of species.
Answer:
The community functions as an interactive unit - C)
Which of the following best describes the effect of cancer-causing mutations on the cell cycle? The mutations increase the speed of the cycle. The mutations cause the cell to bypass checkpoints in the cycle The mutations eliminate one or more stages of the cycle. The mutations interfere with S stage of the cycle. None of these.
Answer:
None of these.
Explanation:
Cancer mutations affect cell cycle regulators.
Cell cycle is a highly regulated process by the regulators that can promote cell cycle or inhibit the cycle. Genes that encode for those regulators are classified into two groups:
proto-oncogenes-encode for positive regulators such as growth factor receptor. If a cancer mutation occurs in the proto-oncogene it becomes oncogene and its product is overactivated. The increased avtivity of positive regulators leads to abnormal cell division.tumor suppresor-the products of such genes blocks the cell cycle, but after the mutation they become inactive, which leads to uncontrolled cell cycle.What would be the effect on blood flow if some arteries lost their elasticity?
A) no affect on blood flow
B) increased blood flow because of a more rigid structre
C) decreased blood flow due to limiting the amount of blood
D) impossible to predict the change in blood flow with these conditions
c because the elasticity of arteries allow them to expand and contain more blood in them.
Hope this helps :)
An apple falls off a tree onto the ground. Which of the following best describes what eventually happens to the material that makes up the apple? A. Water softens the apple and its material dissolves into the ground. B. Sunlight decomposes the apple and recycles its material into the soil. C. Weather conditions rot the apple until all its material disappears and no longer exists. D. Microscopic organisms break down the apple and release its material into the soil and air.
Answer:
D. Microscopic organisms break down the apple and release its material into the soil and air.
Explanation:
Without microscopic organisms today, everything that has died or fallen will still remain on the ground. Fungi, bacteria, and etc. play an essential role in the Earth's ecosystem by breaking down organic material.
An apple falls off a tree onto the ground. The statement best describes reason that makes up the apple is that the microscopic organisms break down the apple and release its material into the soil and air. The correct option is D.
What are microscopic organisms?The organisms very small in size, that are not be seen by the eyes. They can be seen by using the microscopes.
The apple fall off when it has no bond with the tree. The micro-organism starts decomposing the apple from the top notch. As, the bond with the tree branch loosens, the apples fall off a tree onto the ground.
Thus, the statement best describes reason that makes up the apple is that the microscopic organisms break down the apple and release its material into the soil and air. The correct option is D.
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Why is she keeping the dead animals? Gas land movie
Answer:Explanation:
Mixture of oil and water being dumped in rivers and streams that it was not supposed to be dumped in
Against her better judgment, one woman ends herself maintaining a menagerie of dead animals killed by a polluted creek in her freezer.
What happens at the end of Gasland?Fox gets detained near the end of the film while attempting to tape a congressional hearing about the E.P.A. results in Pavilion.
But, even as the fight to safeguard the planet from radical energy development appears to be becoming increasingly difficult, Fox remains unfazed.Oil and water mixtures are being thrown in rivers and streams where they are not supposed to be deposited.
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Which of the following describes when energy is released from an ATP molecule?
When energy is released from an ATP molecule, a phosphate group is removed from the ATP molecule through a process called hydrolysis, which breaks the bond between the second and third phosphate groups.
What is ATP ?ATP (adenosine triphosphate) is a molecule that stores energy in its high-energy phosphate bonds. When energy is needed for cellular processes, the bonds between the phosphate groups are broken, releasing energy and converting ATP to ADP (adenosine diphosphate). This process of converting ATP to ADP is called hydrolysis, which involves the addition of water to the ATP molecule, breaking the bond between the second and third phosphate groups, and releasing a phosphate group and energy. The released energy can then be used for various cellular processes such as muscle contractions, active transport, and metabolic reactions.
Hence, when energy is released from an ATP molecule, a phosphate group is removed from the ATP molecule through a process called hydrolysis, which breaks the bond between the second and third phosphate groups.
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Resource partitioning is best described by which of the following statements? A) Competitive exclusion results in the success of the superior species. B) Slight variations in niche allow similar species to coexist. C) Two species can coevolve and share the same niche. D) Species diversity is maintained by switching between prey species. E) A climax community is reached when no new niches are available.
Answer:
B
Explanation:
The division of limited resources by species to avoid competition in an ecological niche is known as resource partitioning. In this slight variations in niche allow similar species to coexist.
What is a niche?The term niche refers to the role of an organism in a community.
A species' niche includes both the physical and environmental conditions it requires as well as its interactions with other species.
Resource partitioning occurs when species divide a niche to avoid competition for resources. It include slight variations in niche allow similar species to coexist.
Thus, the correct option is B.
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Which of the following is not characteristic of smooth muscle? A) The striations are due to the orderly arrangement of actin and myosin. B) Neurons that innervate smooth muscles are under involuntary control. C) Smooth muscle cells are uninucleate. D) Smooth muscles do not contain sarcomeres. E) The thin filaments of smooth muscle fibers are attached to dense bodies.
Answer:
A) The striations are due to the orderly arrangement of actin and myosin
Explanation:
Smooth muscles are non-striated involuntary muscles which are found in the walls of stomach, urinary bladder, blood vessels...Smooth muscle tissue is composed of spindle-shaped muscle cells with single central nucleus. Like the other two type of muscles (cardiac and skeletal), smooth muscles also have four main functions:
Contractility-ability to contract. In the case of skeletal muscles it is voluntary, while in cardiac and smooth muscles it is unconscious.Excitability-ability to change membrane potential usually by the influence of nervous impulse.Extensibility-the capacity to lengthenElasticity-ability to change its length and then return to previous.The statement that is not characteristic of smooth muscle is the claim that striations are due to the orderly arrangement of actin and myosin. Smooth muscle tissue does not have a striated appearance because its actin and myosin filaments are not arranged in a regular pattern.
Explanation:The characteristic that is not true of smooth muscle is option A: The striations are due to the orderly arrangement of actin and myosin. This is because, unlike skeletal and cardiac muscles, smooth muscles do not have striations. This is due to the fact that the actin and myosin within smooth muscle fibers are not arranged in a repeating pattern, giving the muscle its uniform, nonstriated appearance. Smooth muscles are controlled involuntarily (option B), they contain a single nucleus making them uninucleate (option C), they indeed do not contain sarcomeres (option D), and the thin filaments of smooth muscle fibers are indeed attached to dense bodies (option E).
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30. How might an ecologist test whether a species is occupying its complete fundamental niche or only a portion of it? A) Study the temperature range and humidity requirements of the species. B) Observe whether the niche size changes after the addition of nutritional resources to the habitat. C) Observe whether the niche size changes after the introduction of a similar non-native species. D) Measure the change in reproductive success when the species is subjected to environmental stress. E) Observe whether the species expands its range after the removal of a competitor.
Answer:
by observing whether the nichesize changes afterthe introduction of a similar non natives species
Explanation:
an organism that occupies it's specificed niche will these to increase in size due to the proper conditions at its niche
Which of these is a starting point for primary succession? A) a surface exposed by a retreating glacier B) abandoned farmland C) an abandoned city D) a neglected yard E) none of the above
Answer:
surface exposed by a retreating glacier - A)
Which of the following statements correctly describes the make-up and function of genes? Genes are made of DNA and are carried on chromosomes. Genes are not made of DNA, but they are carried on chromosomes. Genes are made of chromosomes and carried on DNA. Genes are not made of chromosomes but are carried on DNA.
Answer: Genes are made of DNA and are carried on chromosomes.
The statement which correctly describes the make-up and function of gene is that genes are made of DNA and are carried on chromosomes.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
Thus,the DNA is makes up the gene and are transferred by means of chromosomes.
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Which of the following influences human development?
A.
environment
B.
gene expression
C.
hormones
D.
all of these
The answer would be D. :)
Final answer:
Human development is influenced by environment, gene expression, and hormones. These factors interact in complex ways to shape physical growth, psychological development, and individual traits. Recognizing the role of each factor is vital in understanding human development.
Explanation:
The question asks which of the following influences human development: environment, gene expression, hormones, or all of these. The correct answer is D. all of these. Human development is a complex process influenced by a multitude of factors.
Environment plays a crucial role in shaping an individual's physical and psychological development. For instance, a child's nutritional status, exposure to pollutants, and social interactions can significantly impact their growth and development.
Gene expression is fundamental to development, dictating how cells function and how the body grows. Variations in gene expression can lead to different physical and behavioral traits.
Hormones also significantly influence development, regulating processes such as growth, metabolism, and puberty. Hormonal imbalances can lead to developmental differences.
Understanding the interplay between these factors is key to comprehending the complex nature of human growth and development.
A newly discovered solar system is found 300 billion kilometers from the sun. How many AU does this represent? Show your work.
Answer:
1 AU means 1 astronomical unit or the aproximate distance from the earth to the sun
1AU=149597870.7 kiometers
1 billion=1,000,000,000
600 billion=600,000,000,000
x times 1AU=600,000,000,000
x times 149597870.7=600,000,000,000
solve for x
divide both sides by 149597870.7
x=4010.75
so aprox 4011 AU's
Which ordered pair is the best approximation of the exact solution?
Answer:0.9, 2.4)
Explanation:(0.9, 2.4)
Answer:
The correct option is C.
Explanation:
The given system of equation is
[tex]y=4x-1[/tex]
[tex]y=-3x+5[/tex]
The table of values is given. From the table:
The difference between both functions at x=0.5 is
[tex]1-3.5=-2.5[/tex]
The difference between both functions at x=0.6 is
[tex]1.4-3.2=-1.8[/tex]
The difference between both functions at x=0.7 is
[tex]1.8-2.9=-1.1[/tex]
The difference between both functions at x=0.8 is
[tex]2.2-2.6=-0.4[/tex]
The difference between both functions at x=0.9 is
[tex]2.6-2.3=0.3[/tex]
The difference between both functions at x=1 is
[tex]3-2=1[/tex]
The absolute difference between both the functions is minimum at x=0.9. So, the x-coordinate of the solution is 0.9.
The graph of both functions is shown below. Both functions intersect each other at (0.857,2.429). It means the solution of given system of equations is
[tex](0.857,2.429)\approx (0.9,2.4)[/tex]
The solution of given system of equations is (0.9,2.4). Therefore the correct option is C.
All of the following describe possible results of competition between two species except A) competitive exclusion. B) aposematic coloration. C) resource partitioning. D) reduction in the population of one species. E) reduction in the populations of both species.
Answer:
B) aposematic coloration
Explanation:
The species constantly compete between each other, some because they occupy the same niche int he food chain, others even though they are in different niches tend to destroy each other, and some just avoid each other and partition the resources. This often results in partitioning of the resources between different species, when usually they are active in different parts of the day and avoid each other. Also, it is common that some of the species is more competitive, so that will result in a decline of the other species, or if the species are on the same level of competitiveness, then usually both species have declines in numbers to some optimal level. The aposematic coloration though is not part of the competition between the species. It is a type of coloration that warns the other species that the species that possesses it is either not good for eating, or it has a weapon that can harm them, thus they should avoid it and leave it alone.
Why is genetic recombination important for species?
A. Genetic recombination allows the genetic material of a cell to be copied before cell division, resulting in daughter cells that can undergo genetic recombination.
B. Genetic recombination allows the genetic material to be expressed, creating both RNA and proteins from a cell's DNA.
C. Genetic recombination allows new genetic combinations and increases the genetic diversity in a population. This drives natural selection and evolution.
D. Genetic recombination allows the best genes to be selected, ensuring that mutated genes aren't passed on to offspring
ANSWER:
The correct option is C- Genetic recombination allows "new genetic combinations' and increases the "genetic diversity in population'. This drives natural selection and evolution.
EXPLANATION:
Genetic recombination is a process wherein "genetic material" is exchanged between different organisms for the production of an offspring. This means that new genetic combinations are created for the offspring to develop with some traits from the parents while some unique traits. Genetic recombination is essentially needed for a species to diversify and grow and prevents it from becoming extinct.From the question, the correct answer is C: Genetic recombination allows new genetic combinations and increases the genetic diversity in a population. This drives natural selection and evolution.
Further Explanation:
Genetic recombination is important because it aids the production of new genetic types. New genetic types are the essential raw materials needed for natural selection and evolution. When new genetic types are produced, they begin to replace existing genetic types; this process is called natural selection.
Genetic recombination is also important in the aspect of enabling various biological developments in eukaryotic cells.
Genetic recombination is also of great importance because it allows organisms evolve in response to changes in the environment.
Genetic recombination can be defined as the rearrangement of Deoxyribonucleic Acid (DNA) sequences through some combination of the fracture, copying and rejoining of chromosomes. It also refers to the possible outcomes of such rearrangements.
Genetic recombination also involves combining DNA from two different sources into a single molecule. Individual genes are not altered; they are simply joined together in new combinations.
Naturally, the combination of DNA from two different persons into one molecule can be done in two steps:
DNA from two different individuals must be combined in a single cell. DNA from two different individuals is joined to successfully form a single molecule.LEARN MORE:
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Genetic recombinationCellsEvolutionDNAChromosomesAll of the following are terms that ecologists use to describe communities except for A) species richness. B) species diversity. C) Batesian diversity. D) trophic structure. E) stability.
Answer:
Batesian diversity - C)
a scientist wants his work to be published in a journal. which of the following sets of people will need to replicate the scientist's work before it can be published?
a) his fellow scientist
b) the scientist himself
c) his friends and family
d) members of political groups
Answer:
the answer is A. his fellow scientist
***if it requires two answers***
A and B
Explanation:
Answer:
A his fellow scientists
Explanation:
His fellow scientists need to confirm his work because they are his/her colleagues.
During which process of glass manufacturing does the glass become a solid without crystallizing?
*annealing,
*floating on tin,
*melting the mix or
*washing, drying, and cutting
if i recall from my lesson last week it was melting and mix
The study of chemicals and bonds is called chemistry. There is two types of elements are there and these are metals and nonmetals.
The correct answer is option C which is melting or mixing.
What is glass?Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling of the molten form; some glasses such as volcanic glass are naturally occurring.
According to the question, the correct answer is option C melting the mix.
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Cationic trypsinogen is an enzyme made in the pancreas that helps to digest food. It is encoded for by the PRSS1 gene. Individuals with a disorder called hereditary pancreatitis have mutations in the PRSS1gene, which result in inflammation of the pancreas, possibly leading to permanent tissue damage. The disorder is inherited in an autosomal dominant fashion. Imagine that you are part of a research team interested in determining the penetrance of a different PRSS1 mutation, Ala16Val. Your team has identified 120 individuals with the PRSS1 Ala16Valallele and found that 48 of the individuals did not display any evidence of pancreatitis. From your data, what is the penetrance of the PRSS1 Ala16Valmutation? Enter you a nswer as a whole number in the blank provided
Answer:
60%
Explanation:
Penetrance in genetics is defined as a proportion of individuals that carry a certain gene (mutation of the gene) with the expressed phenotype (trait). In the example above we wanted to know the penetrance of the PRSS1 Ala16Val mutation. Form 120 individuals, 72 of them expressed some evidence of pancreatitis (120-48). The proportion of them with the expressed trait can be calculated as 72:120=0.6 or 60%.
Which of the following is an example of Müllerian mimicry? A) two species of unpalatable butterfly that have the same color pattern B) a day-flying hawkmoth that looks like a wasp C) a katydid whose wings look like a dead leaf D) two species of rattlesnake that both rattle their tails E) two species of moths that with wing spots that look like owl's eyes
Answer:
D) two species of rattlesnake that both rattle their tails
Explanation:
The Mullerian mimicry can simply be described as a common feature of two or more different species that can be harmful and dangerous in order to fend of predators. In this case we have the two species of rattlesnake which are using the same method to fend of any predators from, by rattling their tails. This is very useful as a defense mechanism because the species that can cause harm to them only need to encounter one of the species and then be wary of both and avoid them both, as both species use the same tactic for defense or warning, thus the chances are reducing even more that an animal, especially a young and inexperienced one, will mess with them or attack them.
Müllerian mimicry refers to when multiple harmful or unappealing species share the same warning coloration to deter predators. An example would be two species of unpalatable butterflies that have the same color pattern. This stands in contrast to Emsleyan/Mertensian mimicry, where a dangerous prey mimics a less harmful one.
Explanation:In Müllerian mimicry, multiple species that are unappealing or harmful to predators share the same warning coloration to benefit from combined deterrence. All the mimicking species actually possess defenses. An example of this from your list would be two species of unpalatable butterflies that share the same color pattern. It's a mutual reinforcement of the warning signal, making it more effective in averting predators.
Emsleyan/Mertensian mimicry, on the other hand, is where a more dangerous species mimics a less dangerous but noxious one, like a venomous coral snake mimicking a non-venomous milk snake. This is different from Müllerian mimicry, as the mimic is more harmful than the model it is imitating.
Understanding these mimics involves understanding animal behavior and predator-prey interactions, providing insight into the complex dynamics of ecosystems.
Learn more about Müllerian mimicry here:https://brainly.com/question/33447300
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