Describe the bottleneck effect.

Describe the bottleneck effect.

• A. It occurs when a population rapidly increases in size.
• B. It describes the introduction of new alleles into a population by migration.
• C. It is the accumulation of mutations in a small population over time.
• D. Gene frequency changes due to re-establishment of a population following a catastrophic loss of most of the population. Founders of the next gene pool are the survivors.

Answer: (D)