Question

which best describes derived characteristics? they are newly evolved traits. they appear in all the ancestors. they appear at the end of each branch. they stem from primary characteristics.

Explanation:

Derived characteristics are newly evolved traits that are not present in the common ancestor. They distinguish a group from its ancestors. For example, in the evolution of vertebrates, the presence of hair in mammals is a derived characteristic. It is a new trait that evolved in the mammalian lineage and is not present in the common ancestor of all vertebrates.

Answer:

They are newly evolved traits.