申論題

26. In the peppered month (B ist on be ml aria), black individuals may be either homozygous (A₁A₁) or heterozygous (A₁A₂), whereas pale gray months are homozygous (A₂A₂). Suppose that in a sample of 250 months from one locality, 108 are black and 142 are gray, (a) Which allele is dominant? (b) Assuming that the locus is in Hardy-Weinberg equilibrium, what are the allele irequencies? (c) Under this assumption, please describe Ho (Observed heterozygosity), He (Expect heterozygosity) and F_is. (6 分）