A genetic difference is largely responsible for the fact that people in some parts of the world consume more dairy products than do people in other parts of the world. How does that gene affect behavior?

Question

Quizplus · Accepted Answer

The gene in question is lactase persistence, which allows for the digestion of lactose, the sugar found in dairy products. People with lactase persistence are more likely to consume dairy products because they are able to metabolize lactose effectively. This gene does not affect taste buds, brain structure, or sense of smell.

A Genetic Difference Is Largely Responsible for the Fact That