An example of the role of cultural practices shaping natural selection on genes that affect human health concerns

a. sufferer's nerves

b. lactose intolerance

c. sucrose intolerance

d. none of the above

The correct answer here is D) None of the above

Explanation:

Lactose intolerance and sucrose intolerance in themselves are not practices but side effects of practices that affect health concerns.

For instance, research shows that cultures with a long history of dairy farming and milk drinking or at least a history of drinking milk have a much higher likelihood to be lactose tolerant than those who don't. And when they can tolerate lactose their bodies take note of this and records the same in their genetic databank.

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d) center of the mid-ocean ridge

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sinserly,

steckh986

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.