Lactose tolerance emerged
a) Only in Europe because local peoples revered individuals with the ability to drink milk as adults
b) Only in Africa due to the emergence and spread of agriculture and animal husbandry
c) About 10,000 years ago in Europe and Africa because milk is a safe source of drinking water
d) Only in Southeast Asia, where water buffalo were first domesticated
e) In both European and some African populations but because of different selected mutations
Answer: E