Biology (11th Edition)

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

Chapter 23 - Systematics, Phylogenies, and Comparative Biology - Review Questions - Understand: 6

Answer

D.

Work Step by Step

The outgroup (D.) shows the ancestral state, and thus polarity. A. could contain examples which would confuse the proper idea of polarity, and B. is wrong since some data is needed but it does not have to be molecular data. C. can be excluded since groups' names are irrelevant to the analysis.
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