Which Scenario Best Illustrates the Concept of Genetic Drift

question 16

Multiple Choice

Which scenario best illustrates the concept of genetic drift?

• A)Twelve thousand years ago Native Americans traversed the Bering Strait to settle in the Americas,causing different genetic traits to be favored over others.
• B)The genetic mutation that causes sickle cell anemia also increases resistance to malaria,increasing the frequency of the diseased allele in the general population.
• C)The prevalence of depression is greater in populations where the serotonin transporter gene translocated to position q21 along chromosome 17.
• D)There is a higher than average rate of Ellis-van Creveld syndrome in the Amish community because the diseased allele was introduced by some of the original Amish settlers.

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