Campbell Biology (11th Edition)

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

Chapter 26 - 26.3 - Concept Check - Page 563: 1


Hair might or might not be useful. Having hair itself is not very useful since this defines mammals as separate from other organisms, but a special type of hair could be used to define one group of mammals apart from all others.

Work Step by Step

This question is helping you to see that a shared feature defines a group. Whether a feature can be used to define a group apart from the whole depends on the state of that character and how it is defined-- it must be different somehow in each group.
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