Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 34 - 34.5 - Concept Check - Page 738: 2


Snakes are tetrapods, even though they lack limbs, since they evolved from tetrapod ancestors as seen in the relic limb bones in some snakes. They belong to the tetrapod clade.

Work Step by Step

This question is asking you to understand the nature of a clade and how its some of its members may have lost a key, defining feature of the clade. Review earlier material on phylogenetics and clades.
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