Practice!

Sample Problem

Which of the following are more likely to be closely related?

Solution

(A) is the correct answer. Two species in the same region under different environments are almost always more closely related than two species in different regions under the same environments. For example, two species of finch living in the Galapagos, versus one species of finch living in the Galapagos and another species of finch living in Hawaii. That’s why biogeography is a very important bank for evolution evidence.