Zoology 8th Edition by Stephen Miller,John Harley

Exercise 16

Millions of years ago two populations of a species were separated as a result of two continents drifting apart. Members of these two populations adapted to different environments and today are very different from one another and classified as different species. Accounts like this that explain how geographical barriers help account for the evolution of groups of animals is the work of
A) paleontologists.
B) molecular biologists.
C) comparative anatomists.
D) biogeographers.