PRIN. OF LIFE (LL)-W/ACHIEVE
PRIN. OF LIFE (LL)-W/ACHIEVE
3rd Edition
ISBN: 9781319492069
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 37.1, Problem 4RA
Summary Introduction

To determine: The mechanism by which size-dependent trend affects the evolution of behaviors that involve leaping from branch to branch within trees.

Introduction: It is given that if an animal falls from a substantial height, its risk of getting hurt from the whole-body impact on the ground depends on its body size according to the laws of physics.

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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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