Which of the following does NOT promote speciation?
a. geographic isolation.
b. natural selection acting on populations.
c. behavioral isolation.
d. gene flow and interbreeding.
e. accumulation of mutations.
Question 2
A phylogenetic tree _______ whereas a cladogram does not.
a. indicates exact relationships between all species.
b. indicates ancestral-descendant relationships
c. uses only analogous character traits.
d. contains only reptiles.
e. contains only mammals.