Question

multiple choice question
what changes in the genetic variation of a population are expected after it experiences a bottleneck followed by growth and a return to the original population size?
genetic variation will be decreased.
genetic variation will be increased.
the amount of genetic variation will be the same.
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Explanation:

A population bottleneck is a sharp reduction in population size. During this event, many alleles are lost from the gene - pool. Even if the population later grows back to its original size, the genetic variation remains low because the alleles that were lost during the bottleneck are not easily regained.

Answer:

Genetic variation will be decreased.