Speciation can occur as a result of all of the following except
a. geographic isolation
b. natural selection acting on populations
c. ecological separation
d. lack of differences in habitats
e. limited gene exchange
Question 2
Unlike a cladogram, a phylogenetic tree
a. includes the dimension of time
b. does not suggest ancestral-descendant relationships
c. is one-dimensional
d. are used by physical anthropologists to identify and assess the utility of traits
e. are used by physical anthropologists to make testable hypotheses regarding relationships between groups of organisms
