"For a diploid species, assume one set of 100 demes, each with a constant size of 50 individuals, and another set of 100 demes, each with 100 individuals. (a) If in each deme the frequencies of neutra alleles A1 and A2 are 0.4 and 0.6 respectively, what fraction of demes in each set is likely to become fixed for allele A1 versus A2? (b) Assume that a netural mutation arises in each deme. Calculate the probabilty that it will become fixed in a population of each size. iIn what number of demes (approximately) do you expect it to become fixed?" I'm not sure where to start with this question... is there a formula to calculate this?