Biology (11th Edition)

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

Chapter 19 - Cellular Mechanisms of Development - Review Questions - Apply: 4

Answer

A.

Work Step by Step

Morphogens tell cells where they are and how to differentiate (A.) This does not have to happen from very early in development, counter to what B. says, nor does differentiation have to occur just after cell division, counter to C. D. is wrong because reprogramming is very rare, not found after every cell division.
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