Question

It can be theoretically shown that one migrant per generation can provide enough genetic contribution to keep populations from differentiating locally. What are genetic consequences of gene flow among populations? What evolutionary forces are responsible for promoting and maintaining genetic divergence? How will gene flow interact with these forces to influence the level of population subdivision?

Answer 1

Gene flow involves the movement of alleles between populations through migration. It introduces new genetic variation and prevents genetic differentiation. Natural selection and genetic drift can still lead to genetic divergence despite gene flow.

Step-by-step explanation:

Gene flow refers to the movement of alleles in and out of a population due to migration of individuals or gametes. It can introduce new genetic variation to populations in different geographic locations and habitats. Gene flow promotes gene mixing and helps prevent genetic differentiation among populations. However, certain evolutionary forces such as natural selection and genetic drift can lead to genetic divergence between populations, even when there is gene flow.