Why Might Native Americans Be a General Exception to the Rule

question 54

Multiple Choice

Why might Native Americans be a general exception to the rule that darker skin is associated with environments with high UV radiation?

• A) They are relatively recent migrants to the New World.
• B) Native Americans have a unique genetic mutation that makes their skin darker than expected.
• C) Dark skin among Native Americans is an acclimatization, and not due to genetics.
• D) Dark skin among Native Americans is a culturally induced trait.

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Definitions:

Thrombectomy

A medical procedure to remove a blood clot (thrombus) from a blood vessel.

Erythropoietin

A hormone produced primarily by the kidneys that stimulates the production of red blood cells in the bone marrow.

Agglutination

The clumping of particles or cells, such as bacteria or red blood cells, in response to antibodies or other substances.

Immunoglobulin

A group of proteins known as antibodies produced by the immune system to fight against pathogens and foreign substances.