Question

What does gene flow between populations do?

Answer 1

Gene flow:

1. It occurs when genetic material is transferred from one population to another.
2. Gene flow can impact the next population either positively (by helping the species to survive) or negatively (by passing on alleles that may be harmful).
3. Gene flow from one population to another leads to evolution due to the introduction or deletion of alleles (two or more versions of DNA at a genome location) and results in genetic diversity.
4. It occurs slowly in populations that have lower mobility and fewer members.
5. Small levels of gene flow can also significantly impact a species.