3. Which discovery supports the hypothesis that evolution of the lactase persistence trait was driven by the use of milk in
pastoralist cultures?
a. The lactase gene is present both in humans and in domesticated animals.
b. Ancient pots used to hold milk are about the same age as the lactase persistence mutations
c. Most human cultures today drink milk and most people worldwide are lactase persistent.
d. Scientists have identified different mutations that cause lactase persistence.