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Consider a locus with two alleles - B and b. B is dominant, while b is...

Consider a locus with two alleles - B and b. B is dominant, while b is recessive. There is no mutation. B has a selective advantage relative to b, so that the fitnesses of the three genotypes are BB = 1, Bb = 1, and bb = 1-s. In this case, s = 0.50, so that bb homozygotes have 50% fitness of heterozygotes and BB homozygotes. If the population has the following genotypic counts prior to selection of BB = 500, Bb = 250, and bb = 250, what is the expected change in the frequency of B after one generation with selection? Please give your answer to two decimal places.

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Answer #1

Answer:

Thus, after one generation frequency of B will be 0. 677.

Expected change=

=0.677-0.625

=0.047

~0.05

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