Biology (11th Edition)

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

Chapter 33 - Animal Diversity and the Evolution of Body Plans - Review Questions - Understand - Page 659: 8



Work Step by Step

B.-D. are all kinds of data which have existed for a long time and which, therefore, have not made large changes in our understanding of animal evolution. In contrast, A. is only really a few decades old and have made a large change in some of our understanding of evolution.
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