A.   the series of apparent adaptations that are never actually used.

B.   an anatomical feature used in the manner for which it was originally selected.

C.   the use of an anatomical feature in a way unrelated to the feature’s original function.

D.   a phenomenon that occurs before natural selection can occur.

A.   primate must be a species of prosimian, as that suborder of primates relies heavily on the sense of smell for many aspects of daily life.

B.   species is nocturnal.

C.   is a species of anthropoid because it has an increased reliance on vision.

D.   primate exhibits a derived trait for an enhanced sense of smell, since this trait is not commonly observed in mammal species.

A.   are mostly frugivorous.

B.   are usually terrestrial.

C.   are referred to as “cheek pouch” monkeys.

D.   have specialized digestive anatomy for eating leaves.

A.   a larger brain.

B.   a reduced number of teeth.

C.   an enlarged olfactory bulb and enlarged scent glands.

D.   smaller eye orbits.

A.   a healthy population living in a subtropical environment.

B.   not highly adaptable to changing environments but do well in zoos.

C.   among the most endangered animals due to human exploitation of resources.

D.   among the most endangered animal species due to disease.