The FY3 gene plays a role in immune responses in flies.In one population, there are two alleles, and the frequency of one allele is 0.8.If the population is at Hardy-Weinberg equilibrium, how many homozygotes for the more common allele should we observe in a sample of 250 individuals?

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The frequency of the more common allele is 0.8, so the frequency of homozygotes for this allele (p^2 in Hardy-Weinberg equation) is 0.8^2 = 0.64. In a sample of 250 individuals, the expected number of such homozygotes is 0.64 * 250 = 160.

The FY3 Gene Plays a Role in Immune Responses in Flies.In