Why did the lactose tolerance mutation in the East African herders spread so rapidly within the population?
A. Milk provided calcium for strong bones.
B. It was a selective advantage for survival during droughts and cold winters.
C. Lactose was a better source of energy than glucose.
D. Milk was a good source of protein during the summer harvests.
Answer:B
Why did the lactose tolerance mutation in the East African herders spread so rapidly within the population?
A. Milk provided calcium for strong bones. B. It was a selective advantage for survival during droughts and cold winters. C. Lactose was a better source of energy than glucose. D. Milk was a good source of protein during the summer harvests.