Pr(A)=0.36 Only two alleles are presented. Then, the frequency of the allele B is 1 - Pr(A) = 0.6379 According to Hardy-Weinberg principle, Pr(AA)=Pr(A)*Pr(A) = 0.36 * 0.36 = 0.13 Pr(AB)=2*Pr(A)*Pr(B) = 2 * 0.36 * 0.64 = 0.46 Pr(AA)=Pr(B)*Pr(B) = 0.64 * 0.64 = 0.41