Question

In small isolated populations, gene frequencies can fluctuate considerably. The term that applies to this circumstance is ________.

A) genetic isolation
B) allelic separation
C) natural selection
D) stabilizing selection
E) genetic drift

Answer 1

E

Genetic drift is the change in frequency of an existing gene variant in the population due to random chance. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It could also cause initially rare alleles to become much more frequent, and even fixed