A Genetic Difference Is Largely Responsible for the Fact That

Multiple Choice

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?

A) by altering the taste buds
B) by altering the structure of the lateral hypothalamus in the brain
C) by altering the metabolism of milk sugars
D) by altering the sense of smell