Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 24 - Test Your Understanding - Level 1 - Knowledge/Comprehension - Page 517: 1

Answer

B.

Work Step by Step

A fits inside B, and hybrids are rarely possible at the level of C. D is itself a product of gene flow, not a unit which participates in that process.
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