Which of the following statements about sticklebacks is true?
A) The differences between marine and freshwater sticklebacks are mainly induced by environmental conditions.
B) The differences between marine and freshwater sticklebacks arise due to changes in the expression of a transcription factor.
C) These species illustrate parallel phenotypic evolution.
D) Both a and b
E) Both b and c

Question

Quizplus · Accepted Answer

The statement that the differences between marine and freshwater sticklebacks arise due to changes in the expression of a transcription factor is true (option B). The statement that these species illustrate parallel phenotypic evolution is also true (option C). Therefore, the correct answer is E: Both b and c.

Which of the Following Statements About Sticklebacks Is True