Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 28 - Pregnancy and Human Development - Review Questions - Page 1093: 1(4)

Answer

(a) cleavage

Work Step by Step

Cleavage is when the zygote goes through mitotic divisions to form small cells and after 4-5 days the zygote becomes a blastocyst, a hollow sphere of cells that contains fluid and a cluster of cells that clings to the inside.
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