PRIN.OF HUMAN ANATOMY (LL)
PRIN.OF HUMAN ANATOMY (LL)
15th Edition
ISBN: 9781119662761
Author: Tortora
Publisher: WILEY
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Chapter 28, Problem 12CP
Summary Introduction

To review:

Semen and its function.

Introduction:

The semen is a fluid made up of sperm and the seminal fluid that is secreted by seminiferous tubule, and the three accessory glands, which are seminal vesicle, prostate, and bulbourethral glands.

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You aim to test the hypothesis that the Tbx4 and Tbx5 genes inhibit each other's expression during limb development. With access to chicken embryos and viruses capable of overexpressing Tbx4 and Tbx5, describe an experiment to investigate whether these genes suppress each other's expression in the limb buds. What results would you expect if they do repress each other? What results would you expect if they do not repress each other?
You decide to delete Fgf4 and Fgf8 specifically in the limb bud. Explain why you would not knock out these genes in the entire embryo instead.
You implant an FGF10-coated bead into the anterior flank of a chicken embryo, directly below the level of the wing bud. What is the phenotype of the resulting ectopic limb?  Briefly describe the expected expression domains of 1) Shh, 2) Tbx4, and 3) Tbx5 in the resulting ectopic limb bud.

Chapter 28 Solutions

PRIN.OF HUMAN ANATOMY (LL)

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