Biology (11th Edition)

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

Chapter 22 - The Origin of Species - Review Questions - Understand: 6

Answer

D.

Work Step by Step

A. and B. are wrong since they state that the phenomena in each of them is always involved in prezygotic isolation--these phenomena may be involved but are not necessary. C. is wrong because prezygotic isolation can also be found in animals.
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