Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 50, Problem 16TYK
Summary Introduction

To review:

The features of early development that are conserved across all vertebrates.

Introduction:

Early development of an organism includes three stages of development. These are cleavage, gastrulation, and neurulation. Cleavage begins as soon as the egg is fertilized. It includes the mitotic division of the zygote to produce gastrula. The gastrula undergoes gastrulation that leads to the formation of the germ layers by morphogenetic rearrangements of the cells.

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https://nj.pbslearningmedia.org/resource/tdc02.sci.life.stru.different/cell-differentiation/#.XhYcbf5KjBI How would you explain the similarities among bird, mammal, and reptile embryos at the early stages of development, and what directs the sequence of events during embryonic development?
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