Answer
20. Embryo
Work Step by Step
When the three germ layers have formed the conceptos becomes an embryo.
Anatomy & Physiology: The Unity of Form and Function, 7th Edition
by Saladin, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073403717
ISBN 13:
978-0-07340-371-7
Chapter 29 - Human Development and Aging - Study Guide - Testing Your Recall - Page 1128: 20
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