Why Is the AMY1 Gene More Prevalent in Humans Than

Multiple Choice

Why is the AMY1 gene more prevalent in humans than in chimpanzees and more prevalent in some human populations than others? (Select all correct choices)

A) Chimps have to digest forms of starch different from those digested by humans.
B) Chimps have less starch in their diets than humans and therefore need lower levels of amylase.
C) Some human populations have more starch in their diets than others.
D) The AMY1 gene is directly involved with the ability to speak.