Which Scenario Best Illustrates the Concept of Migration

question 79

Multiple Choice

Which scenario best illustrates the concept of migration?

• 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 original Amish settlers.

---

Definitions:

Right Side of the Brain

The hemisphere of the brain that is often associated with creative thinking, intuition, and artistic abilities, contrasting with the left side's analytical and logical functions.

Hemispheric Specialization

The distinction in cognitive functions between the left and right hemispheres of the brain, where each hemisphere is specialized for certain tasks.

Glial Cells

Non-neuronal cells in the central nervous system that support, protect, and nourish neurons, playing a key role in maintaining homeostasis.

Neurons

Specialized cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.