What Results in Populations That Change Due to Genetic Drift

Question

What results in populations that change due to genetic drift?
A) They haven't really undergone evolutionary change.
B) They will then be subject to strong sexual selection.
C) They have evolved.
D) They will soon change back to the original form as a result of natural selection.

Accepted Answer

Genetic drift, whether it is caused by the bottleneck effect or founder effect, results in random changes in the frequency of alleles in a population, leading to evolutionary change. The change is not driven by natural selection, but rather by chance events, causing the population to evolve in a manner different from the original population, leading to genetic diversity being created.