Humans, as well as other mammals ranging from mice to elephants, have hair.Hair, then, would be considered to be:
A) a derived character.
B) an ancestral character.
C) a cladistic character.
D) an analogous character.
E) a polyphyletic character.

Question

Quizplus · Accepted Answer

Hair is considered an ancestral character because it is a trait that was present in the common ancestor of mammals and has been inherited by all its descendants.

Humans, as Well as Other Mammals Ranging from Mice to Elephants