Humans are a partial exception to which rule?
A) Adults can all drink milk.
B) They all have a declining level of lactose tolerance as they age.
C) All children limit dairy products.
D) Milk causes stomach cramps in all humans.

Question

Quizplus · Accepted Answer

Humans are a partial exception to the rule that all mammals have declining levels of lactose tolerance as they age. Some human populations have developed lactose persistence, allowing them to digest lactose into adulthood.

Humans Are a Partial Exception to Which Rule