Campbell Biology (12th Edition)

Published by Pearson
ISBN 10: 0135188741
ISBN 13: 978-0-13518-874-3

Chapter 22 - Test Your Understanding - Levels 3-4 - Applying/Analyzing - Page 485: 5

Answer

B.

Work Step by Step

A is wrong since whales do use their forelimbs for swimming, and the rate of mutation in C is not necessarily related to structural features of a limb. D can be excluded since whales are, indeed, mammals.
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