Lactose intolerance is one example of how
A) culture can produce a shift in the genetics of a population.
B) diet can have a direct impact on a person's genes.
C) environment is much more important than genetics.
D) mutations generally lead to negative consequences.

Question

Quizplus · Accepted Answer

Lactose intolerance is an example of how culture can produce a shift in the genetics of a population. The ability to digest lactose in adulthood was not present in early human populations but arose due to a cultural practice of dairying and consuming milk products. Over time, this led to a genetic shift where those who could digest lactose had a selective advantage and passed on their genes to future generations.

Lactose Intolerance Is One Example of How