A flood kills most of a population of ants that live near a river. after the flood, the ant population increases, but its allele frequency is different. what type of effect is this?

a. genetic drift

b. mass extinction

c. bottleneck

d. founder

The answer is letter a, genetic drift. It is the change in the occurrence of an existing allele in a population due to random sampling of organisms. The alleles in the offspring are a sample of those in the parents, and accidental has a role in determining whether a given individual lives and reproduces. This may be a basis gene variants to vanish completely and thereby reduce genetic variation.

The answer for Apex is "Bottleneck" Which is C.