We will talk about this more in class, but pigeons have a gene, EphB2 , that con

Question

We will talk about this more in class, but pigeons have a gene, EphB2, that controls head crest feather development. A recessive allele at this locus reverses the feathers on their head crests and basically makes them look like they have a huge cowlick. There are 100,000 pigeons in the population; 1,000 pigeons are heterozygous for the recessive trait; and 1,674 pigeons have reversed head-crest feathers. If we call the dominant allele A1 and the recessive allele A2, which of the following is closest to the frequency of the A2 allele?

Explanation / Answer

Given that, A1A2 pigeons = 1000, A2A2 pigeons = 1674

Total A2 alleles = 1000 + 2(1674) = 4348

Total individuals = 100000; total alleles = 2(100000) = 200000

Therefore, allele frequency of A2 in the population = 4348/200000 = 0.02174*

(*The question appears to be a multiple choice type question; you may select the answer nearest to the value)

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