Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 32 - 32.1 - Concept Check - Page 673: 1


1) Zygote 2) Blastula 3) Gastrula HOX genes play the major role.

Work Step by Step

The zygote undergoes cleavage, forming a blastula. Then during gastrulation, one end of the embryo folds inward and produces layers of embryonic tissue. The differentiation of cells in these layers forms a variety of animal forms. The development is controlled by a similar set of Hox genes.
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