HINT 15E: You need to find the expected proportion of heterozygotes formed by random mating within a population with allele frequency p, E[2pq]. This is derived in Box 15.1 as 2(p0q0 – var(p)) = 2p0q0(1– 1/2N)t). If two individuals randomly chosen from different subpopulations were crossed, what would be the chance that their offspring would be heterozygous?