Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 21 - The Evidence for Evolution - Review Questions - Apply: 1



Work Step by Step

Environmental variation tends to maintain genetic diversity (A). B. os wrong since beak size has varied widely from time-to-time and place-to-place in the Galapagos. C. is untrue based on the description in the text of the adaptive nature of small beaks during wetter years. D. is wrong since B. and C. are wrong.
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