Biology (11th Edition)

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

Chapter 35 - Deuterostomes - Review Questions - Synthesize: 3

Answer

Both horses and hominids have only one living species, but in the not too distant past, there were many species of each group alive simultaneously, in different places and using different resources in the environment.

Work Step by Step

Review Ch. 21 on horses, and see Fig. 35.40, which shows living hominids over time. See the parallel between the two timelines in terms of simultaneously living taxa in past vs. the present.
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