Problem Description: A gene with two alleles (e.g. A and a) is responsible for a dominant...
Problem Description: A gene with two alleles (e.g. A and a) is responsible for a dominant trait in Hellbenders (Cryptobranchus alleganiensis). AA individuals have a normal phenotype, while those with aa lack the trait. Heterozygotes have phenotypes that are identical to AA individuals.
Although aa individuals have lower survivorship (15%) than those with the “normal” trait (35%), they have higher fecundity over their lifetime (100 individuals for aa; compared to 48 for AA and Aa). Assume the allele frequency of A in a population is 0.14.
Answer the following:
A) Whatistheabsolutefitnessforeachofthethreegenotypes?(3pts)
B) What is the relative fitness for each of the three genotypes?
(3pts)
C) What is the average fitness for the population? (3pts)
D) What will be the frequencies of A and a in the next generation?
(4pts)
E) What type of selection is acting on this population?
(2pts)
F) Graph what the allele frequency for A may be expected to look
like over time. Label all axes and
lines. Hint: okay to show overall pattern not exact one given numbers. (5 pts)
Homework Answers
![beguncy of Foch Allol Axla. கடியாயவும் = 43/png + May - 2x0.25 to 35 Frequency of a = La Laa]+ AaJ 2 = 2X0. 15+0.35 a=0.325 T](http://img.homeworklib.com/questions/3d8ed2b0-e72f-11eb-ad21-3139e8320c2e.png?x-oss-process=image/resize,w_560)
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Problem Description: A gene with two alleles (e.g. A and a) is
responsible for a dominant...
PLEASE SHOW GRAPH ONLY. A gene with two alleles (e.g. A and a) is responsible for...
PLEASE SHOW GRAPH ONLY. A gene with two alleles (e.g. A and a) is responsible for a dominant trait in Hellbenders (Cryptobranchus alleganiensis). AA individuals have a normal phenotype, while those with aa lack the trait. Heterozygotes have phenotypes that are identical to AA individuals. Although aa individuals have lower survivorship (15%) than those with the “normal” trait (35%), they have higher fecundity over their lifetime (100 individuals for aa; compared to 48 for AA and Aa). Assume the allele...
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1. Fixation of Dominant Alleles Start with a population that has a gene with two alleles (A and a) with classical Mendelian dominance that are at equal frequency (p0.5. q 0.5). Assume this first generation is at hardy Weinberg equilibrium. Calculate the genotype frequencies AA- a. Aa b. Now assume some environmental change that makes the recessive phenotype completely unfit (fitness- 0). Calculate the allele frequencies and genotype frequencies in the second generation. (Hint: Your calculations might be easier if...
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