Final answer:
Monkeys and apes are both primates, but they are not equally related. Apes evolved from the catarrhines in Africa, they are larger than monkeys and do not have tails. Not all monkeys are equally related to apes, as some monkeys are more closely related to apes than others.
Step-by-step explanation:
Monkeys and apes are both primates, but not all monkeys are equally related to apes. Apes evolved from the catarrhines in Africa approximately 25 million years ago, and they are generally larger than monkeys and do not have tails. Monkeys, on the other hand, include different groups such as the platyrrhines and the ceropithecoids, and they have tails. Some monkeys, like the spider monkey, are more closely related to apes than other monkeys.