Which statement best summarizes why genetic drift tends to impact small populations more than large populations? A. Small populations have a heterozygote advantage because heterozygotes are more common than homozygotes. B. Small populations have a smaller gene pool, so random changes influence them more.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 5RQ: Population genetics is the study of ________. a. how allele frequencies in a population change over...

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Question

Which statement best summarizes why genetic drift tends to impact small populations more than large populations?
A. Small populations have a heterozygote advantage because heterozygotes are more common than homozygotes.
B. Small populations have a smaller gene pool, so random changes influence them more.
C. Small populations have a relatively large gene pool, so the founder effect stabilizes their alleles.
D. Small populations tend to experience directional selection, making one phenotype more common.

Definition Definition Observable physical traits or characteristics of an organism, which are determined by its genetic makeup (genotype) as well as environmental factors. These traits can include anything from eye color or height to behavior or disease susceptibility. Understanding an organism's phenotype is important in fields such as genetics, medicine, and ecology.

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