Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 17, Problem 7WIO
Summary Introduction

To explain:

How the treatment of stomach ulcers have changed since the discovery of its causal agent Helicobacter pylori.

Concept introduction:

Antibiotics are chemical agents used to kill or thwart the growth of bacteria. They do so by inhibiting the cell wall formation or disturb the plasma membrane of the bacteria. This makes the bacteria vulnerable and they die.

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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?
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