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.

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

In which part of the body is a ball-and-socket joint found?

What are the three groups of atoms that make up amino acids called