What process occurs during prophase I of meiosis? 1)random fertilization
2)separation of chromosomes
3)cytokinesis
4)crossing-over

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.