Which Scenario Best Illustrates the Concept of Migration

question 67

Multiple Choice

Which scenario best illustrates the concept of migration?

• A)Thousands of years ago Native Americans traveled long distances 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 original Amish settlers.

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