Why Is There So Much Variation in Human Skin Coloration

question 1

Multiple Choice

Why is there so much variation in human skin coloration?

• A) This occurred because humans underwent natural selection,which resulted in traits that conferred advantages to humans becoming fixed in populations.
• B) This occurred because skin coloration results in different advantages depending on the levels of sun in the region.
• C) This occurred because alleles that are harmful in one environmental context may be beneficial in another.
• D) This occurred because humans are found in areas that range from high-UV-light environments to low-UV-light environments.
• E) all of these

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Definitions:

Fear Response

The physiological and psychological reaction to perceived threats, activating the body's fight or flight response.

Conditioned Stimulus

A stimulus that initially has no effect but, after being paired with an unconditioned stimulus, eventually elicits a conditioned response.

Mirror Neurons

Neurons that fire both when an individual acts and when the individual observes the same action performed by another, thought to be the basis of empathy and understanding others' actions.

Hopscotch

A children's game involving throwing a small object into numbered spaces outlined on the ground and hopping through the spaces to retrieve the object.