The _____ effect refers to a drastic reduction in population size leading to decreased allele frequencies.
Understand the Problem
The question is asking for the term that describes a phenomenon in genetics where a significant decline in population size results in a loss of genetic variation, particularly in allele frequencies.
Answer
bottleneck effect
The bottleneck effect refers to a drastic reduction in population size leading to decreased allele frequencies.
Answer for screen readers
The bottleneck effect refers to a drastic reduction in population size leading to decreased allele frequencies.
More Information
The bottleneck effect is a concept in population genetics that describes events leading to significant population size reductions, causing a loss of genetic diversity. This can have long-lasting effects on a population's genetic structure.
Tips
A common mistake is confusing the bottleneck effect with the founder effect. The bottleneck effect involves reduction in population size, whereas the founder effect involves a new population beginning from a small number of individuals.
Sources
- Bottlenecks and founder effects - Understanding Evolution - evolution.berkeley.edu
- Genetic drift is a change in allele frequencies - homework.study.com - homework.study.com
- Population Size and Genetic Drift - Advanced | CK-12 Foundation - flexbooks.ck12.org
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