EBK BIOLOGY
EBK BIOLOGY
5th Edition
ISBN: 9780133954425
Author: Maier
Publisher: YUZU
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Chapter 21, Problem 7LTB
Summary Introduction

Introduction:

Bone can be defined as a dynamic tissue which is continually being reshaped by the osteoblasts. Osteoblasts are the cells which have a single nucleus that produces bone. In bone formation, these cells work in groups of associated cells. Single cells cannot form bone. A group of ordered osteoblasts together with the bone produced by a unit of cells is generally known as osteon.

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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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