Answer:
DNA sequencing
Explanation:
Mutation can be described as a change which occurs in the DNA of an organism. It might be natural or it my be induced.
DNA sequencing can be described as a process in which the sequence or pattern of arrangement of nucleotides in the DNA. This pattern reading allows to see the differences which arise due to mutations. The normal sequence can be compared to the sequence in which error has occurred so that the error can be diagnosed.
Compare mitosis and meiosis: please list 3 things that are unique to mitosis, 3 things that
are unique to meiosis, and 1 thing that they have in common. *
Mitosis occurs in the somatic cell, it is an equational division, mitosis is required for the repair and growth of the cell and organism consequently.
While meiosis occurs in gametes or germ cell, it is a reductional division, meiosis is responsible for the formation of sex cells as sperm and eggs in the organism.
Both mitosis and meiosis are responsible for splitting the nucleus and DNA and these are passed on to the two daughter cells formed.
Explanation:
Mitosis is the process of cell division in which the cell divides and each cell is identical to the parent cell in the context of DNA and its nature There are four phases of DNA as Prophase, metaphase, anaphase and telophase. The daughter cells formed, have diploid (2n) number of chromosomes.
While meiosis is the process of cell division in germ cells which start with one cell and ends in 4 haploid cells. Meiosis is completed in two steps as meiosis 1 and meiosis 2.
Mitosis results in two identical diploid son cells without homologous chromosome pairing, while meiosis results in four unique haploid son cells with homologous pairing and inheritable recombination. Both suffer DNA replication.
Comparison of Mitosis and Meiosis Both mitosis and meiosis are critical processes of cell division in eukaryotic cells, but they serve different purposes and parade several unique characteristics. Unique Aspects of Mitosis Results in two son cells Son cells are genetically identical to the parent cell Doesn't involve pairing of homologous chromosomes Unique Aspects of Meiosis Results in four son cells Son cells have half the number of chromosomes of the parent cell( haploid) Crossing- over occurs, leading to inheritable recombination Common Aspect Both processes are anteceded by a round of DNA replication. Meiosis differs from mitosis in several ways, but the abecedarian congruity is that both are anteceded by DNA replication. In mitosis, the performing son cells, which are generally diploid, are genetically identical. In discrepancy, meiosis is characterized by two nuclear divisions and produces four genetically unique haploid son cells, important for sexual reduplication.
Which is the result of smooth endoplasmic reticulum being damaged in liver cells by excess alcohol consumption?
Question 13 options:
absorption of excess water
difficulty with protein synthesis
excessive breakdown of carbohydrates
inability to detoxify harmful substances
Answer:
inability to detoxify harmful substances
Explanation:
The smooth ER is more tubular in structure and has no ribosomes. It is involved mainly in the synthesis of various types of lipids. It is also involved in the breakdown of foreign chemicals. Destruction of smooth ER would lead to inability of detoxify harmful chemicals like drugs. The liver functions in detoxification.
Humans need clean air, freshwater, food, and shelter to survive.
a. How could one person living alone in the wilderness obtain food without help
from anyone else? (2 points)
b. How could many people living in a community obtain food? (2 points)
c. How could living in a community increase the survival rate of individuals when
it comes to obtaining food resources? (1 point)
I'll mark brainlest
Answer:
a) A person living in the wilderness can obtain food by feeding on the different plants and trees in the area. Once, he gets a knowledge of the plants which are edible, he can start to even grow them if he plans to stay for a long time.
b) Many people living in a community can obtain food from many different resources. The can plant fruits and vegetables. They can hunt for wild life animals and cook them.
c) A person living in a community will be able to get more ideas for obtaining food resources. The work of finding the food resources will be divided among different persons of the community instead of just a single one. Hence, in this way obtaining food resources will become easier.
Final answer:
An individual in the wilderness might hunt, fish, or forage for food, while a community can use agriculture, trade, and specialization to obtain resources. Communities help increase survival rates by sharing knowledge and labor in food production.
Explanation:
a. Humans require clean air, freshwater, food, and shelter to survive. When considering how an individual living alone in the wilderness could obtain food, they might rely on skills such as hunting, fishing, and foraging for wild edibles. Without the aid of others, they would need a comprehensive understanding of their environment and the resources it offers.
b. In contrast, when many people living in a community work together to obtain food, they can employ forms of agriculture, trade, and specialization to secure a diverse range of food resources. Communities can develop systems like farming crops, raising livestock, and creating food distribution networks, which contribute to a more reliable food supply for all members.
c. Living in a community can increase the survival rate of individuals when it comes to obtaining food resources by providing a collective safety net. Collaboration allows for the sharing of knowledge and labor, thereby creating a more efficient system of resource acquisition and distribution.
Describe how global fertility rates and populations are changing?
for rates
Higher child mortality causes higher fertility rates. Rapid population growth has been a temporary phenomenon in countries around the world. Rapid population growth starts when the health of the population improves and the mortality rate in a population decreases while the birth rate stays as high as before.
for population
Population growth is still fast: Every year 140 million are born and 58 million die – the difference is the number of people that we add to the world population in a year: 82 million. ... In red you see the annual population growth rate (that is, the percentage change in population per year) of the global population.
source - ourworldindata.org
Global fertility rates are declining as societies develop and women gain access to education and employment opportunities. Global populations are increasing, but at a slower pace due to decreasing fertility rates and increased life expectancy. Population growth is unevenly distributed across the world.
Explanation:Global fertility rates and populations are changing in several ways. Firstly, fertility rates around the world are declining as societies become more developed and women gain access to education and employment opportunities. Additionally, there are regional variations in fertility rates, with some countries experiencing higher rates than others. Secondly, global populations are increasing, but at a slower pace compared to previous years. This is due to decreasing fertility rates alongside increased life expectancy. Finally, population growth is unevenly distributed, with some countries experiencing rapid population growth while others are facing population decline.
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When viewing the periodic table, the electronegativity increases as you move ___ a column and to the ___in each row.
A: up; left
B: up; right
C: down; left
D: down; right
Answer: B. Up , Right
Explanation: The trend on electronegativity
In a row or period presents an increase in electronegtivity from left to right.
In a column or group electronegativity increases from bottom to top.
which statement is the best distinction between birds and other animals
birds have amniote eggs
birds can fly
birds have feathers
birds eat seeds
Answer: C. Birds Have Feathers
Explanation: k12 test / k12 unit test 5.19
write an article for publication on the topic;effects of drug abuse.
Answer:
Explained below
Explanation:
Effects of Drug Abuse:- Surveys show that use of drugs has been on the rise especially among the youth. This is really a cause of concern as it could result in many harmful effects. The drugs, which are commonly abused are opioids, cannabinoids and coca alkaloids. Majority of these are obtained from flowering plants. Some are obtained from fungi. Proper education and guidance would enable youth to safeguard themselves against these dangerous behaviour patterns and follow healthy lifestyle.
"The effects of drug abuse are far-reaching and can be devastating to individuals, families, and communities. Drug abuse, which refers to the excessive and harmful use of psychoactive substances, including alcohol and illicit drugs, leads to a wide range of negative outcomes that can be physical, psychological, social, and economic in nature.
Physically, drug abuse can cause a variety of health problems. These include liver damage from alcohol abuse, lung and heart problems from smoking substances like tobacco or marijuana, and increased risk of infectious diseases such as HIV and hepatitis from injection drug use. Chronic use of certain drugs can lead to severe physical dependence and withdrawal symptoms when use is reduced or stopped.
Psychologically, drug abuse can alter brain chemistry, affecting mood, perception, and decision-making. It can lead to mental health disorders such as depression, anxiety, and psychosis. Long-term drug use can also impair cognitive functions, including learning and memory, which can persist even after drug use has ceased.
Socially, drug abuse can strain relationships with family and friends, leading to isolation and social dysfunction. It can also result in poor performance at work or school, job loss, and legal problems, including arrest and incarceration. Children and adolescents who are exposed to drug abuse in the home are at increased risk for neglect, abuse, and their own future substance use disorders.
Economically, the impact of drug abuse is substantial. It includes the costs of healthcare, lost productivity, crime, and social welfare programs. The financial burden extends to the criminal justice system, where a significant portion of crimes are related to drug abuse, including possession, trafficking, and actions committed under the influence of drugs.
Furthermore, drug abuse contributes to public health issues by increasing the risk of motor vehicle accidents and other injuries due to impaired judgment and coordination. It also places a burden on emergency services and treatment facilities, which must allocate resources to address drug-related health crises.
Preventing and treating drug abuse requires a comprehensive approach that includes education, prevention programs, accessible treatment options, and support for recovery. Public awareness campaigns can help to reduce the stigma associated with drug addiction, encouraging individuals to seek help. Effective treatment modalities, such as cognitive-behavioral therapy, medication-assisted treatment, and support groups, can aid in recovery and reduce the likelihood of relapse.
In conclusion, the effects of drug abuse are multifaceted and can have a profound impact on every aspect of an individual's life. Addressing this issue requires a concerted effort from healthcare providers, policymakers, educators, and community leaders to implement strategies that prevent drug abuse, provide effective treatment, and support long-term recovery. By doing so, we can mitigate the individual and societal costs associated with drug abuse and promote healthier, more productive communities."
a circle has a circumference of 44 metres what is its area
Answer: A = 154 m²
Explanation: First solve for radius r
Using circumference formula
C= 2πr
Derive to find r:
r = C / 2π
= 44 m / 2 ( 3.14 )
= 7 m²
Solve for area
A = π r²
= ( 3.14 ) ( 7 m )²
= 154 m²
Imagine a genetic cross between two people, blood type AB. What is the probability that these people will have offspring with type B blood?
Answer:
50%
Explanation:
If both parents have AB blood type, the expected outcomes for their offspring would be 25% AA (type A), 50% AB (type AG), and 25% BB (type B)
Answer:
25%
Explanation:
1/4 offspring could have blood type B: a 25% chance. 2/4 could be AB and 1/4 could be A
100 POINTS!
Electromagnetic Energy Example Two
Activity:
Type of electromagnetic energy:
Picture:
Description of use:
Type of electromagnetic energy: Microwave radiation
Description of use: the microwave radiation is absorbed by water molecules in the food which converts to heat intern heats the food do to the high levels of radiation being emitted into the food
What are two methods that are used to directly study human chromosomes ???
Answer: Pedigree and karyotype
Explanation:
Which of the following describes a drug target?
Answer:
The correct option is A) The molecule to which a drug binds
Explanation:
A drug target can be described as any molecule which is present in an organism's body to which a certain drug can attach and cause therapeutic effect. Usually, the drug target is a certain type of proteins such as receptor proteins, enzymes etc. The drug can work in different ways on the drug target such as inhibiting the protein, changing its active site or changing its substrate etc. Hence, the correct option is A.
Answer:A the molecule to which the drug binds.
Explanation:
An earthworm has a heart that moves blood.
What is the main function of this organ?
A. To take in oxygen and remove carbon dioxide
B. To take in and digest food
C. To transport materials to and from body cells
D. To respond to the environment
Answer:
C
Explanation:
The heart moves the blood which contains the materials the cell needs and the materials from the cells
An earthworm has a heart that moves blood and the main function of this organ is to transport materials to and from body cells.
What is the need for the heart like this in earthworms?Earthworms' heart is located at the mouth.In earthworms from the mouth, the aortic arches pump blood in a similar way to a human heart.Earthworms' heart is like this because they have very small body which needs to adjust all the function in the body.In the case of Earthworm single closed circulatory system is designed to pump blood in this species with the help of muscles and vessels.Hence, the main function of earthworms this organ is to transport materials to and from body cells.
Therefore, option C is the correct answer.
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How should you test a hypothesis?
by writing a mathematical equation
by making a single observation
by performing a controlled experiment
by answering a series of questions
Mark this and return
Save and Fxit
Ihm
Answer:
Hypothesis is tested "by performing a controlled experiment"
Explanation:
An hypothesis can be defined as the explanation which is proposed based on the evidence available. Based on this hypothesis further investigation can be done. a hypothesis can be tested by performing a controlled experiment and making observations. The results of the experiment will discard or prove the hypothesis right. The idea of the hypothesis can be verified by conducting various observation and experiments related to the data available. A guess on the theory can also be considered as a hypothesis. We can conclude as wild guess rather being well developed theory.
Answer:
by performing a controlled experiment
Explanation:
Which statements describe sedimentary rock? Check all that apply
It comes from older rocks.
It forms from sediments
It is one of the three main types of rocks.
It comes from materials that never existed before,
It can form from materials solidified from solutions
The right options are:
It comes from older rocks.
It forms from sediments
It is one of the three main types of rocks.
It can form from materials solidified from solutions
Sedimentary rocks:Sedimentary rocks are formed by the deposition of the small particles and cementation of organic particles on the floor of the oceans or the other bodies of water at the earth's surface.Sedimentary rock is a rock formed underground, usually under a source of water. The rock is made up of smaller rocks that over the years, fused together and solidified.Rock material from pre-existing rocks such as metamorphic and igneous rocks eventually make up sedimentary rocks. Types of sedimentary rocks are; Sandstone, siltstone, shale, breccia, etc. formed from weathering of rocks.Learn more about sedimentary rocks:
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The main four factors that weather are: humidity, air pressure, wind and
Answer:
It could be temperature maybe
Explanation:
In order for transcription of the lac operon genes to take place, what must happen?
The repressor protein binds to the promoter sequence.
The repressor protein binds to the DNA molecule, and RNA polymerase falls off.
The repressor protein falls off the DNA molecule, and RNA polymerase binds to the promoter.
Lactose is removed from the system.
Answer:
Lactose is removed from the System
In order for transcription of the lac operon genes to take place, the repressor protein falls off the DNA molecule, and RNA polymerase binds to the promoter that is in the third option as the RNA polymerase initiates the lac gene expression.
What is the significance of the Lac gene?The lac gene is present in the bacteria, where there are three genes that activate when there is an abundance of lactose in the bacterial medium, so that the bacteria can take the lactose and break it down into glucose and galactose for growth. Because the inhibitor, in general, inhibits the RNA polymerase's movement along the DNA, when lactose is present, the inhibitor binds to it, allowing the RNA polymerase to continue lac transcription.
Hence, in order for transcription of the lac operon genes to take place, the repressor protein falls off the DNA molecule, and RNA polymerase binds to the promoter that is in the third option as the RNA polymerase initiates the lac gene expression.
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Which of the following statements best describes the difference between natural selection and evolution? (5 points)
Natural selection changes an individual's traits over time, whereas evolution changes an entire population's traits.
• Natural selection is a process, whereas evolution is what can result from that process.
Natural selection relies on genetic variation, whereas evolution solely relies on mutation and competition
Natural selection refers to the variation in genetic code, whereas evolution refers to the physical changes observed in a species
Natural selection is a process, whereas evolution is what can result from that process. This best describes the difference between natural selection and evolution.
Explanation:
Natural selection is the process by which the population of individuals survive which have best adapted to the environment by passing on the useful genes to its offsprings.
While Evolution is the result of natural selection where all species who have adapted to the environment and survived and passed on the genes to their offsprings. The individuals compete and survive from their genetic variations.
Answer: B
Explanation: I got 100% on the test
Explain why the change in the way that molecules of b globin interact with each other lead to the sickling of the red blood cells in sickle cell anemia
The sickle form of the hemoglobin gene is created when an adenine nucleotide is changed to a thymine. ... That single amino acid replacement in the -globin protein alters the shape and the chemistry of the hemoglobin molecule, causing it to polymerize and distort the red blood cell into the sickle shape.
Final answer:
Sickle cell anemia is caused by a single amino acid change in the beta chain of hemoglobin, where valine replaces glutamate. This alteration leads to hemoglobin polymerization, causing red blood cells to sickle and clog vessels, thereby impeding oxygen transport and leading to serious health issues.
Explanation:
Sickle cell anemia is a condition that arises from a single amino acid substitution in the beta (B) chain of hemoglobin. Normally, the sixth amino acid in hemoglobin's beta chain is glutamate; however, in individuals with sickle cell anemia, this glutamate is replaced by valine.
As a result of this polymerization, the normally biconcave, disc-shaped red blood cells become distorted into a crescent or "sickle" shape. These malformations make the red blood cells less flexible and more likely to clog blood vessels, leading to complications such as impaired oxygen transport, breathlessness, and other serious health issues.
( Would someone be able to help me with this question please and thank you). Need Help ASAP. I posted a picture of the question. There are three parts.
Explanation:
There are three parts
1. bob
The rock which is fixed to the string .
2.point of suspension(s)
The end of the string from where the stone is tied
3.Length of a pendulum(L)
The length between the center of gravity of the stone to the end of the string (point of suspension).
the instruction for the genetic traits of an organism are directly determined by the
(Fill in the blanks! :) If you fill in both I will mark you brainliest.!!!!!!!!!
1: Wind moves horizontally because of differences in air pressure. These differences in air pressure are a result of ________ heating of earth’s atmosphere from the _____.
2:This pressure moves from an area of _____pressure to an area of_____ pressure, creating the wind.
Answer:
1. Wind moves horizontally because of differences in air pressure. These differences in air pressure are a result of __differential______ heating of earth’s atmosphere from the _sun____.
2:This pressure moves from an area of __high___pressure to an area of__low___ pressure, creating the wind.
Explanation:
The sun rays ‘hit’ the earth's surface with increased obliquity with increasing latitude. In addition, the density of the sun rays per sq meter also decreases with increasing latitude. This is all due to the spherical nature of the earth.
However, there are also local differences that cause the earth's surface to heat differentially such as terrain and cloud cover, etc. This creates regions of warmer air mass (low-pressure zones) and cooler air mass(high-pressure zones). These differences cause winds because of air rushes from high to low-pressure zones due to differences in air masses’ temperature-related densities.
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Dr. Benedict wants Mr. Williams to have Crestor 20 mg, one capsule orally once daily for 6 months total.
Fill in the quantity portion # of the prescription. Enter numerical answer only.
Fill in the Sig portion of the prescription using medical abbreviations.
Explanation:
Rx: Crestor 20mg# 30.
Rx: Crestor 20mg # 30 (thirty)
Sig: Crestor 20mg i PO QHS
Refills: 6 times (once per month for 6 months)
These abbreviations mean:
i- 1 tabletPO- the oral route for medication (per os)QHS- a patient's bedtime (hour of sleep)PRN- as necessary or needed (pro re nataFurther Explanation:
Crestor belongs to a drug class of statins or HMG CoA reductase enzyme inhibitors- they bind to the enzyme effectively blocking its cholesterol producing pathway activity. Together with the correct dieting adjustments, it is used to lessen the levels of bad fats and cholesterol (LDL) while raising good ones (HDL). This effectively reduces the risk of heart disease in patients over time
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Which factors will influence the growth of seeding
Answer:
light, water, temperature, and nutrients
Explanation:
Many factors are influencing the seeding and growth, but the 4 most important are: light, water, temperature, and nutrients. These are the most known factors that are helping the plant to be strong and to grow faster.
Of course, for the plant to grow, these four elements should be regularly controlled and changed depending on the plant’s needs.
What is responsible for moving chromosomes during mitosis.
Answer:spindle
Explanation:
Spindle is a strand or network that attach itself to the Chromosome and aids its movement during mitosis towards the pole ensuring every daughter cell is comprise one of it parental DNA.
If a scientist sets up an experiment and the results do not support his hypothesis, what should he
conclude?
He should give up on this research project.
He may want to alter some aspects of your experiment and try it again.
He must have made a mistake in your experiment.
His hypothesis was flawed.
Next
If a scientist sets up an experiment and the results do not support his hypothesis he should conclude that "he may want to alter some aspects of experiment and try it again".
Answer: Option B
Explanation:
Research and experimenting is all about search and re-search for achieving acceptable result in order to meet the demand of project accordingly. It demand huge patience and hard work but also smart work for saving time as much as possible.
If a scientist results do not support hypothesis than after a short break he should alter some steps or parameters of experiment and try it again. Because it may occurred due to an error. And errors are needed to be understood and then rectify it by repeating the procedures with more sincerity.
Answer:
She may want to alter some aspects of the experiment and try again
Explanation:
What are the responsibilities of the region of the brain highlighted below? Image highlights the central region of the brain, above the brain stem.
A.Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities
B.Regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing
C.Regulating the body’s homeostasis, hunger and eating, thirst and drinking, and other functions of basic survival
D.Coordinating movement and balance by using information from sensory nerves, including hand-eye coordination
Answer:
C.Regulating the body’s homeostasis, hunger and eating, thirst and drinking, and other functions of basic survival .
Explanation:
In the figure, highlighted region of the brain is hypothalamus. Hypothalamus is located above the pituitary gland and under the thalamus in the central region of the brain. It is small in size (pea size). It interacts with the pituitary gland regulates the endocrine glands by releasing hormones. Mainly, it regulates the homeostasis in the body by controling body temperature in warm and cold weather, hunger and thrust, fatigue and sleep, and circadian rhythms. In a nutshell, it links the nervous system to endocrine system and is known for central neuroendocrine functions.
Final answer:
The central region of the brain above the brain stem involves the cerebrum, which is responsible for higher functions such as controlling voluntary body movements, processing sensory information, and facilitating thoughts and learning.
Explanation:
The central region of the brain highlighted above the brain stem is likely referring to parts of the brain such as the cerebrum, which includes the cerebral cortex responsible for higher brain functions. The responsibilities of this region of the brain include:
Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities
Regulating the body’s homeostasis, hunger and eating, thirst and drinking, and other functions of basic survival
Coordinating movement and balance by using information from sensory nerves, including hand-eye coordination
The brain stem itself controls basic body functions such as breathing, heartbeat, and digestion, and carries information back and forth between the cerebrum and spinal cord.
19. An organism's gametes have_________________
the number of chromosomes found
in the organism's body cells. (In Biology)
An organism's gametes have half the number of chromosomes found in the organism's body cells.
Explanation:
The gametes or germ cells are haploid (n) in nature while the somatic or other body cells are diploid (2n) in nature.
An organism's gametes have half the number of chromosomes compared to its somatic cells; gametes are haploid while somatic cells are diploid.
An organism's gametes have half the number of chromosomes found in the organism's body cells. Body cells, also known as somatic cells, contain a diploid number of chromosomes (2n), which means they have two sets of chromosomes. In humans, this is 46 chromosomes (23 pairs).
However, gametes, which are the reproductive cells like sperm and eggs, contain a haploid number of chromosomes (n), which is just one set from each pair. When gametes unite during fertilization, they restore the diploid number in the resultant embryo, thus ensuring that the offspring has a complete set of genetic information.
when a man has an allele combination Ww for a trait, what percentage of his gametes will have a dominant allele for the trait?
a.) 75%
b.) 100%
c.) 25%
d.) 50%
Answer:
The correct answer is option d) 50%.
Explanation:
Humans are diploid organisms who have 23 pairs or 46 chromosomes in their genome.Each pair of chromosomes can also called as a pair of alleles.Alleles are alternating forms of the same gene. Of the 46 chromosomes, 23 are obtained from the mother and rest 23 from the father.According to Mendel's law of dominance, the alleles can be either dominant or recessive. A dominant allele can show its character even if only a single copy of it is present in the diploid organism, while a recessive allele gets expressed only when both the allele present are recessive.Unlike somatic cells which are diploid, gametes are haploid, that is, they possess only one allele for one gene.According to Mendel's law of segregation, the allele representing each gene separate from each other during gamete formation, such that, each gamete gets a single allele representing each gene. The man having an allele combination Ww for a particular trait, has one dominant allele (W) and the other recessive allele (w). The gametes produced by this man will have either a dominant allele (W) or a recessive allele (w). Out of the two types of gametes (W and w), produced by the man, one has the dominant allele (W).The ratio of dominant allele(W) containing gamete to number of gametes possible (W or w) is 1 : 2.Therefore, percentage of the man's gametes that will have a dominant allele is 50% (by converting the ratio into percentage).When a man has an allele combination Ww for a trait, the percentage of his gametes that will have a dominant allele is 50%.
WHAT IS SEGREGATION OF ALLELES:An allele is a member of a gene, which comes in pairs. According to Gregor Mendel in his law of segregation, alleles separate into gametes equally.This means that a man with a heterozygous allele combination of Ww will undergo segregation of alleles W and w equally into gametes.Therefore, when a man has an allele combination Ww for a trait, the percentage of his gametes that will have a dominant allele is 50%.
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Answer the question please
Answer:
cell is the simplest level of organization among them. So the correct one is R