Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 43.4, Problem 3R
Summary Introduction
To review:
The diversity of signals generated by the homeobox (Hox) genes in the anterior-posterior axis that control the differentiation of the organs and tissues.
Introduction:
The events taking place during the development of the embryo are highly regulated and under the surveillance of genes present on chromosomes. These genes consist of specific deoxyribonucleic acid (DNA) sequence known as homeobox and hence, the genes are referred to as Hox genes.
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Which of the following is NOT true when comparing epithelial and mesenchymal cells.
A) Epithelial and mesenchymal cells differ in their DNA content.
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D Mesenchymal cells can invade tissues to form organs in new places.
E) Epithelial cells express a different type of cadherin than mesenchymal cell.
Differential Hox gene expression along the anterior-posterior axis in the trunk sets up a prepattern of tissue identities that includes the limb field location, but what mechanisms are then triggered to initiate limb bud formation?
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Chapter 43 Solutions
Life: The Science of Biology
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