Show all work please A new mutation at the T locus has arisen in the squirrel po

Question

Show all work please

A new mutation at the T locus has arisen in the squirrel population on UNC's campus. The allele makes the coats of heterozygotes Carolina blue. A curious undergraduate wonders if there is a selection advantage due to students giving these squirrels extra food handouts. He counts the number of each genotype in early summer just following a breeding and again just before breeding in the winter. His results were as follows: a. Calculate the Absolute Finesses of the three genotypes: TT, Tt, and tt. b. Calculate the Relative Finesses of the three genotypes: TT, Tt, and tt.

Explanation / Answer

Answer a:

So, absolute fitnesses for respective genotypes is the number of alive at reproductive maturity i.e. 1600, 350 and 250 for TT, Tt and tt, respectively.

Answer b:

The survival rates for various genotypes are:

For TT = 1600 X 100 / 3500 = 45.71%

For Tt = 350 x 100 / 400 = 87.5%

For tt = 100 x 100 / 250 = 40%

So the maximum survival rate is for Tt.

Then the absolute fitnesses for respective gentypes will be:

For TT = 45.71 / 87.5 = 0.52

For Tt = 87.5 / 87.5 = 1

For tt = 40 / 87.5 = 0.46

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