Q: What is meant by the following statement? "When mutation is random, natural selection is not." Mark…
A: Thank you for the question Answer :All the options given above are correct.
Q: On which type of alleles does natural selection take the longest to act on? -recessive alleles…
A: The theory of evolution by natural selection suggests that due to the dissimilarities in their…
Q: True or False
A: Answer: A.)Genetic variation is an important force in evolution as it allows natural selection to…
Q: Which of the following could result in a polyphenism? A mutation creates a deleterious version of an…
A: Polymorphism is heritable. It is the ability of object to take many forms. Polyphenism is a type of…
Q: Darwin’s idea for the mechanism of evolution is called the Theory of Natural Selection. One…
A: Each generation produces more individuals capable of surviving. Individuals differ phenotypically,…
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A: The basic physical and functional unit of hereditary is referred to as gene, which is stored in the…
Q: Selection may also act against heterozygotes. How do allele frequencies change if the two…
A: Answer: HETEROZYGOUS: when two different alleles are presnt in a genotype and showing different…
Q: Which of the following BEST describes the relationship between genotype, phenotype, traits, and the…
A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…
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Q: Which of the following is the degree of an organism’s adaptation to an environment, as measured by…
A: Adaptation An evolutionary mechanism where organisms modify or change there internal or external…
Q: Which of the following do NOT contribute to keeping low-fitness alleles in our gene pool? O Late age…
A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…
Q: How do allele frequencies change if the two homozygotes have equal fitness, but heterozgotes have a…
A: Natural selection can cause microevolution (change in allele frequencies), with fitness expanding…
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A: The correct answer is option (B) genetic variation will decrease as the genotype with the highest…
Q: In order for a trait to evolve via natural selection, which of the following must be true regarding…
A: Natural selection is the adaptation and alteration of populations of living organisms. Individuals…
Q: What is artificial selection? * 1 point When the environment selects the best traits to survive and…
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Q: Relative fitness is more important than absolute fitness because ________ . a. Evolutionary change…
A: Relative fitness is not calculated by dividing the absolute fitness with each other, option b is…
Q: othetical population has two alleles for an alleles), the following genotypes were found: 15 TT, 25…
A: An allele frequency is calculated by dividing the number of times the allele of interest is observed…
Q: Evolutionary fitness refers to? the contribution an individual makes to the gene pool of the next…
A: Fitness is a metric that measures an individual's reproductive success. It's also the average…
Q: The gene pool of the peppered moth population in England changed. As a result, the frequency of the…
A: Ans - c ) Black soot from the burning of coal discolored the bark of local trees; black moths became…
Q: Recall that the Hardy-Weinberg model makes the following assumptions: No mutations Extremely large…
A: Introduction According to the Hardy-Weinberg equilibrium, if no unfavorable influences exist,…
Q: The equilibrium frequency of a deleterious allele under mutation-selection balance increases as:
A: Answer: EQUILIBRIUM FREQUENCY is the frequency or point at which no more changes occured in allelic…
Q: Natural selection means that the environment favors survival of some genotypes. From where does…
A: Natural selection can also give certain people a reproductive edge over others. Natural selection…
Q: Which of the following contribute to keeping low-fitness alleles in our gene pool? Choose all that…
A: Natural selection will cause evolution (change in gene frequencies), with fitness-increasing alleles…
Q: Explain in 200 words how the Darwinian evolution can decrease or increase the frequency of an allele
A: Charles Darwin is a naturalist proposed that evolution happens by natural selection. He stated all…
Q: Which of the following are true about the logic we use to identify alleles under positive selection…
A: 1)Alleles under positive selection occur at relatively high frequency. Positive frequency dependent…
Q: Lets say there exists a gene in the United States that comes in two alleles, the dominant A and the…
A: Fitness is a type of regenerative achievement of the parent's offspring in a natural selection the…
Q: Natural selection makes an adaptive trait more common in a population. After many generations, will…
A: Natural selection can be defined as the process in which organisms adapt themselves or evolved…
Q: Suppose there is a type of deleterious mutation in a particular human gene that causes death very…
A: There are few important points : We know that heterozygous deleterious mutations can give rise to…
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Q: In the modern reckoning of evolution by natural selection, what is the most important feature that…
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Q: A mutation produces a new beneficial dominant allele. Which of the following statements is false…
A: Mutation Any changes in the DNA from its originality is known as mutation.
Q: If vestigial traits are no longer useful to an organism, why don't they evolve out of the…
A: Vestigial organs are those structures that are present in the body which had some sort of use for…
Q: For each statement, select the genetic evolutionary concept that best represents the description.…
A: Answer given below
Q: Identifying genes like HMGA2 is important, because it is evidence of natural selection. How does it…
A: Answer. Natural selection is a process by which the forms of organisms in a population that are…
Q: Why is genetic variation important? It creates new combinations of genetic material that did not…
A: Variation is defined as any difference between individual organisms, cells or group of organisms of…
Q: Hippogriffs can have black fur or gray fur. However, there is a high rate of mutation from black…
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A: The set of alleles for a given trait in an organism is called genotype, while the observable traits…
Q: Which of the following is NOT one of Darwin's postulates? Individuals in a population will have…
A: As
Q: Natural selection acts upon ____________________________, evolution upon…
A: Since you have asked multiple questions, we will answer only the first two questions for you. If you…
Q: Rate of evolution by selection is highest for an allele when it is _________ . a. wild type b.…
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Q: Which of the following BEST describes the theory of natural selection? Living organisms change…
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Q: The Hardy–Weinberg principle states that allele and genotype frequencies remain constant from one…
A: Gene is the segment of DNA (deoxyribonucleic acid) responsible for heredity. Two or more alternative…
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- A/A and A/a individuals are equally fertile. If 0.1 percent of the population is a /a, what selection pressureexists against a /a if the A → a mutation rate is 10−5 ?Assume that the frequencies of the alleles are at theirequilibrium values.Which of the following is NOT a valid evolutionary explanation for why aging (or senescence) happens? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a b с d Alleles that reduce survival late in life, after most individuals have reproduced, will have a smaller effect on fitness than alleles that affect survival or reproduction early in life. Alleles that affect survival or reproduction early in life will have a smaller effect on fitness than alleles that reduce survival late in life. Alleles that increase reproductive rates early in life sometimes have trade-offs that reduce later survival. 2 Many deaths of younger individuals are due to causes unrelated to life history such as predation, reducing the effects that aging has on fitness.In a certain population of mice, a single gene controls fur color. There are two possible alleles: B, which leads to a black fur, and W, which leads to white fur. Individuals with the genotype BB will have a black fur, individuals with the genotype WW will have white fur, and individuals with the genotype BW will have gray fur. Scientists recorded the fur color of 1,000 mice from the population. They found that 200 mice have black fur, 400 have gray fur, and 400 have white fur. Ten years later, the measurements are repeated. Again, they recorded the fur color of 1,000 mice. They found that 400 have black fur, 400 have gray fur, and 200 have white fur. Part A: Show the Hardy-Weinberg calculations for the beginning and ending populations. Include the values for the equation as well as the p andq values. Show your work. Part B: Use the Hardy-Weinberg calculation to explain if this population is evolving or not. Then propose a hypothesis about the environment of these mice that would lead…
- In a certain population of mice, a single gene controls fur color. There are two possible alleles: B, which leads to a black fur, and W, which leads to white fur. Individuals with the genotype BB will have a black fur, individuals with the genotype WW will have white fur, and individuals with the genotype BW will have gray fur. Scientists recorded the fur color of 1,000 mice from the population. They found that 200 mice have black fur, 400 have gray fur, and 400 have white fur. Ten years later, the measurements are repeated. Again, they recorded the fur color of 1,000 mice. They found that 400 have black fur, 400 have gray fur, and 200 have white fur. Part A: Show the Hardy-Weinberg calculations for the beginning and ending populations. Include the values for the equation as well as the p and q values. Show your work. Part B: Use the Hardy-Weinberg calculation to explain if this population is evolving or not. Then propose a hypothesis about the environment of these mice that would lead…The agouti gene determines coat colour in mice. Heterozygous mice have yellow coats, while homozygous dominant mice have black coats. However, having two copies of the recessive alleles is lethal. In a population of 2 000 mice, 1 082 mice have black coats. a) Calculate the frequency of each allele. Show all your work and express your answer as a value between 0 and 1 rounded to two decimal places. b) What percentage of the mouse population is expected to be carriers of the lethal allele? Show all your work and express your answer rounded to one decimal place. c) How many mice will die during fetal development? Show all your work and round your answer to the closest whole number.In a population of wild squirrels, most of them have gray fur, butan occasional squirrel is completely white. If we let P and p represent dominant and recessive alleles, respectively, of a genethat encodes an enzyme necessary for pigment formation,which of the following statements do you think is most likely tobe correct?a. The white squirrels are pp, and the p allele is a loss-offunction allele.b. The gray squirrels are pp, and the p allele is a loss-offunction allele.c. The white squirrels are PP, and the P allele is a loss-offunction allele.d. The gray squirrels are PP, and the P allele is a loss-offunction allel
- A form of learning disabilities and speech impairment results from a recessive mutation in the HERC2 gene. The next 4 questions are about this mutation. In a small Amish village in Ohio, about 5 per 1000 births are affected with this disorder. Assume Hardy Weinberg equilibrium. What is the frequency of the dominant WT HERC2 allele in this small village? A form of learning disabilities and speech impairment results from a recessive mutation in the HERC2 gene. The next 4 questions are about this mutation. Part a: In a small Amish village in Ohio, about 5 per 1000 births are affected with this disorder. Assume Hardy Weinberg equilibrium. What is the frequency of the dominant WT HERC2 allele in this small village? a)0.005 b)0.995 c)0.07 d)0.93 Part b: What is the estimated total number of homozygous dominant individuals in this village of 1000 people? a) 70 b) 930 c) 860 d) 140Consider the first copy of an allele for insecticideresistance that arises by mutation in a populationof insects exposed to an insecticide. Is this mutation an adaptation? If, after some generations,we find that most of the population is resistant,is the resistance an adaptation? If we discovergenetic variation for insecticide resistance in apopulation that has had no experience of insecticides, is the variation an adaptation? If an insectpopulation is polymorphic for two alleles, eachof which confers resistance against one of twopesticides that are alternately applied, is thevariation an adaptation? Or is each of the tworesistance traits an adaptation?Cystic fibrosis is an autosomal recessive genetic disorder. Which statement BEST explains how cystic fibrosis is maintained in the gene pool? O A. Organisms that are heterozygous can pass on only the dominant allele. O B. Organisms that are homozygous-dominant pass on either dominant or recessive alleles. O C. Organisms that are heterozygous can pass on the recessive alleles because they are carriers of the disorders but do not show characterisitcs of the disorder becuase they have the dominant allele as well. O D. Organisms that are homozygous-recessive pass on only the dominant allele.
- A common misconception of evolution is that it should naturally eliminate "harmful" alleles/mutations if they do not assist survival or reproduction. Explain why this is inaccurate and how these "harmful" mendelian alleles persist within the human genome. In your response, give an example of a mendelian allele that causes a "harmful" genetic disease that does not appear to have a beneficial componentA meadow is home to a population of plants of a particular species. Among these individuals are 125 plants that have red flowers and 375 plants that have white flowers. The allele of the flower color gene that produces red flowers (R) is completely dominant over the white flower color allele (r). Approximately what percent of the plants in the meadow would be expected to have the Rr genotype? a- 23% b- 33% c- 2% d- 76%Imagine a population of 80 horses in which all individuals are homozygous for an allele A1. But then a mutation introduces a new allele, A2, in one horse which is a heterozygote for this locus. Assuming the mutation is neutral, and no further mutation occurs, answer the following questions. Question 16 What is the probability that A2 will eventually become fixed? Question 17 What is the probability that A2 will go extinct?
