if the frequency of the m allele in the human mn blood group system is 0.65 in a population at equilibrium, then the frequency of the n allele must be 0.04.

Gene flow and genetic drift both affect allele frequencies in a population. a high level of gene flow into a population genetic diversity in a population. a high level of gene flow out of a population genetic diversity in a population. genetic drift is the change in allele frequencies due to factors. typically, genetic drift has the biggest impact on populations.