SAT Subject Biology Practice Question 443: Answer and Explanation

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Question: 443

13.
1


2


3


4


5

All of the structures are the result of

A. mutation
B. succession
C. convergent evolution
D. divergent evolution
E. regression

Correct Answer: D

Explanation:

D Divergent evolution produces structures that are similar in basic structure (look at the skeletal pattern in each of the limbs) but that may differ in function. Note that mutation (choice A) may have produced the changes that ultimately led to evolution, but choice D is a better, more accurate answer. Succession (choice B) describes the change from barren land to a stable climax community. Convergent evolution (choice C) produces organisms with similar functions but with different basic structures. Regression (choice E) makes no sense at all. It is not a term that describes anything to do with evolution; in fact, it means the opposite of evolution.

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