Which evolutionary forces a. cause an increase in genetic variation both within and between populations? b. cause a decrease in genetic variation both within and between populations? c. cause an increase in genetic variation within populations but cause a decrease in genetic variation between populations?

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter19: Population Genetics And Human Evolution
Section: Chapter Questions
Problem 4QP
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Which evolutionary forces
a. cause an increase in genetic variation both within and between
populations?
b. cause a decrease in genetic variation both within and between
populations?
c. cause an increase in genetic variation within populations but cause a
decrease in genetic variation between populations?

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