Anatomy & Physiology: The Unity of Form and Function, 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073403717
ISBN 13: 978-0-07340-371-7

Chapter 1 - Atlas A - Study Guide - Testing Your Comprehension - Page 39: 4

Answer

We might not have the following qualities or capabilities: 1. Flexible and very movable shoulders (joints) 2. Opposable thumbs 3. Stereoscopic vision 4. Color vision

Work Step by Step

These characteristics enabled our arboreal ancestors to swing easily and securely from tree to tree, to have good depth perception, and to distinguish ripe flowers and fruits. These capabilities developed because they conferred survival advantages on creatures swinging through the trees, looking for ripe fruits at close ranges.
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