Calculate the average excess of fitness for each allele. Show your work.
Given the following allele frequency data, answer the following questions.
Generation 1: p=0.6, q=0.4; population mean fitness =0.9
Generation 2: p'=0.54, q'=0.46
Calculate the average excess of fitness for each allele. Show your work.
Homework Answers
Answer :)
To calculate the average excess of fitness (αA1), use the following formula:
Δp = p x (αA1 / wbar)
The symbol wbar (overbar of w) is the average fitness of the population.
Fitness of allele p = 0.6
Δp = 0.6 – 0.54
Δp = 0.06
0.06 = 0.6 x (αA1 /0.9)
(αA1 /0.9) = 0.1
αA1 = 0.09
Therefore, average excess of fitness for the allele p is 0.09.
For allele q:
Δq = q x (αA2 / wbar)
Δq = 0.46 – 0.4
Δq = 0.06
0.06 = 0.4 x (αA2 /0.9)
(αA2 /0.9) = 0.06/0.4
(αA2 /0.9) = 0.15
αA2 = 0.135
Therefore, average excess of fitness for the allele q is 0.135.
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