A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the homozygous dominant genotype (AA). * a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices 37. A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the dominant trait. * a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices

A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the homozygous dominant genotype (AA). * a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices 37. A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the dominant trait. * a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter21: Microevolution: Genetic Changes Within Populations

Section: Chapter Questions

Problem 7TYK: A population of mice is at HardyWeinberg equilibrium at a gene locus that controls fur color. The...

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The phenomenon in which chance events cause unpredictable changes in allele frequencies is called: a. gene flow. b. genetic drift. c. inbreeding. d. balanced polymorphism. e. stabilizing selection.
1. A sample of 600 individuals from a population is examined for the presence of the HindIII polymorphism in an autsomal Sca gene. There are two alleles of Sca gene, A and a. The results are 14 individuals are AA, 212 are Aa, 374 are aa. Please answer the following questions accordingly? How many alleles are present in the gene pool in the sample population fort he Sca gene? What are the genotype frequencies? What are the frequencies of A and a alleles? What are the expected numbers of the three genotypes, assuming random
2. You have sampled a population in which you know that the percentage of the homozygous recessive genotype (a) is 26%. Using that 26%, calculate the following: A. The frequency of the "aa" genotype. B. The frequency of the "a" allele. C. The frequency of the "A" allele. D. The frequencies of the genotypes "AA" and "Aa." E. The frequencies of the two possible phenotypes if "A" is completely dominant over "a
3. a. Why are most populations not in Hardy Weinberg Equilibrium? b. There is an ancient village population of humans. We know very little about this population. How can we use genetics to determine if the societal system of the village was matrilocal or patrilocal? c. There was variation in a rat phenotype (coat color.) The coat colors ranged from dark color coats to light color coats. As the rats migrated into the basements of campus, the light color rats were more likely to be caught by the campus cat. Over time, the basement rat population shifted to entirely dark color coats. This is an example of what kind of selection? d. Explain how a genetic bottleneck could lead to higher susceptibility of a disease, such cancer, in that population.
6. Read the following sentence: “Even though people selectively breed to yield animals with desired traits, there are dangers to selective breeding.” What does yield mean as used in the text? a) To produce b) To surrender c) To endanger d) Not worth much money to remove
24. The Hardy-Weinberg equation accurately predicts allele frequencies for a population only if a. there is no migration b. there is no mutation c. there is no natural selection d. the population is large enough that genetic drift is not important e. there is no sexual selection.
About 7% of men in a population are red-green colour blind due to a sex-linked recessive gene. Assuming random mating in the population with respect to colour blindness; c) What percentage of men would be colour blind in the next generation?
5) This chart shows the fur colors of a population of rabbits in the Great Smoky Mountains. A mutation introduces an allele for white fur. Based on the data, what do you predict will happen in the next 20 years? Select ALL that apply. Not Graded A) Those with white fur will slowly increase over the next 20 years. B) Those with mottled fur and brown fur will continue to exist in the population. C) Those with white fur will continue to decrease or even die out of the population. D) Mottled fur is the dominant trait so it will continue to increase in the population. E) Unless the environment changes, those with mottled fur will continue to increase in number.
1) “Nature is an extremely dangerous place to live.” Provide example in support of this assertion. 2) How is selective breeding similar and different from natural selection?
1. Describe what you think would happen if a male mouse acquired a mutation that gave it tan or a sandy colored belly AND female mice wanted to mate with this more about 1 % more than a male mouse with a white belly? 2. Now, suppose that the females were really wild about the sandy colored belly of this male mouse. The females wanted to mate with this lucky mouse about 10% more than males with a white belly? What would happen to the frequency of sandy colored bellies in this population over time? 3. What is the selective pressure at work in questions 1 & 3? 4. Describe what this statement means: "The division of humans into races by using skin color is an arbitrary social construct." 5. What are melanosomes? Name the cell type that produces melanosomes. 6. What happens to melanosomes after they are released into keratinocytes? 7. List the three factors that work together to create the range of skin colors we see today. 8. Describe the main function of keratinocytes and of…
6) If a sudden frost kills many small birds in a population, but only a few medium- and large-sized ones, which type of selection is likely operating? a.Intersexual b.Directional c.Disruptive d.Stabilizing
72)The four figures below show the expression of a trait by three genotypes (the three lines) in two environments (A & B). Which graph shows the most variation in phenotypic plasticity? B A D C