Which of the following statements about adaptive radiations is true?
A) They occur only on islands.
B) They frequently follow mass extinctions.
C) They begin when populations differentiate genetically in response to environmental differences.
D) Both b and c
E) All of the above

Question

Quizplus · Accepted Answer

Adaptive radiations can occur in a variety of situations, not just on islands. However, they often follow mass extinctions, as newly available ecological niches are rapidly filled by different species. The starting point of an adaptive radiation is the genetic differentiation of populations in response to environmental differences, allowing them to occupy new ecological roles. Therefore, both options b and c are correct.

Which of the Following Statements About Adaptive Radiations Is True