With Enough Time and in the Absence of Other Evolutionary

Question

With enough time and in the absence of other evolutionary mechanisms,genetic drift will ________.
A) reduce the genetic variation in a population
B) increase the genetic variation in a population
C) have no effect on the genetic variation of a population
D) None of the above.

Accepted Answer

Genetic drift is a random fluctuation in the frequency of alleles in a population over time due to chance events. As the effect of genetic drift is random, it can cause some alleles to become more common and others to be lost entirely over time. This can reduce the genetic variation in a population if the effect of genetic drift continues over many generations. Thus, option A is the best choice.