IA MODIFIED MASTERING BIOLOGY WITH E TEX
IA MODIFIED MASTERING BIOLOGY WITH E TEX
12th Edition
ISBN: 9780136781752
Author: Urry
Publisher: PEARSON
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Chapter 22.2, Problem 3CC
Summary Introduction

To Determine: The impact of genotype on phenotype.

Introduction: Genes are the nucleotide sequences on the DNA (deoxyribonucleic acid) that express to form various proteins and factors. The different or variant forms of a gene are called alleles. Multiple alleles are formed from the wild-type alleles during the evolution of the organisms. This helped in the selection of fit species that can survive and reproduce further.

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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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