Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 22 - The Origin of Species - Review Questions - Understand - Page 458: 7

Answer

D.

Work Step by Step

Allopolypoidy involves an infertile hybrid regaining fertility by a spontaneous doubling of its chromosomes, which also reproductively isolates it from the two parent species (D.). Contrary to A., it is quick, and contrary to C. it leads to more, not fewer, chromosomes. B. is wrong because it is not common in birds but, rather, in plants.
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