A researcher is studying a newly discovered gene that causes increased body weight in domesticated chickens. In a mainland population, the frequency of the A₁ allele is 0.2, for this gene with two alleles. If 100 of these mainland chicken are transported on a ship to an isolated island with a population of 200 A₁A₁ chickens, 400 A₁A₂ chickens, and 400 A₂A₂chickens, what would the frequency of the A₁ allele in the admixed population? A) 0.764 B) 0.618 C) 0.745 D) 0.236 E) 0.382

Question

Quizplus · Accepted Answer

The frequency of the A1 allele in the mainland population is 0.2. In the island population, the frequency of A1 is (2*200 + 400)/(2*(200+400+400)) = 0.3. The admixed population has 100 mainland chickens and 1000 island chickens, so the frequency of A1 is (0.2*100 + 0.3*1000)/(100+1000) = 0.382.

A Researcher Is Studying a Newly Discovered Gene That Causes