The loss of allelic variation due to an event that decreases the size of the entire population is called
A)gene flow.
B)genetic drift.
C)founder effect.
D)population bottleneck.
E)selection.

Question

Quizplus · Accepted Answer

A population bottleneck is an event that causes a significant decrease in the size of the entire population, resulting in the loss of allelic variation. This can occur due to natural disasters, disease outbreaks, or human activities. Genetic drift can also occur in smaller populations, but the loss of variation is specific to events that decrease the size of the entire population. Gene flow refers to the movement of genes between populations, while founder effect refers to the establishment of a new population by a small number of individuals, which can also lead to a loss of variation. Selection can lead to a decrease in the frequency of certain alleles, but it does not necessarily result in a loss of variation.

The Loss of Allelic Variation Due to an Event That