Consider a locus with two alleles in a population of 100 ind

Consider a locus with two alleles in a population of 100 individuals, with the initial frequencies A_1 = 0.7 and A_2 = 0.3. If A_1 and A_2 are selectively neutral, what is the probability that the A2 allele will drift to fixation? 70% 0% 3% 30%

Solution

As A2 is selectively neutral so the probability of drift id fixation is almost nil or 3%.