Question

y-5 molars are found in which of the following primate groups?
apes
humans
new world monkeys
a and b

Explanation:

Y - 5 molars are a characteristic dental feature of apes. Humans have 5 - cusp molars but not in the Y - 5 pattern. New World monkeys have different dental formulas and do not have Y - 5 molars.

Answer:

A. apes