EBK BIOLOGY
EBK BIOLOGY
10th Edition
ISBN: 8220100474729
Author: Martin
Publisher: Cengage Learning US
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Chapter 47.2, Problem 2LO
Summary Introduction

To trace: The pathways traveled by an ingested material through the human digestive system and describe the structure and function of each structure involved.

Introduction: Digestive system consists of a collection of organs that helps in the digestion of food materials and converting them into the basic energy-rich molecules for supplying them to the entire body. Several organs are involved in the digestive system that starts from the mouth and ends at the anus. Complex food materials are converted to the simplified and utilizable form and the left over waste materials are stored in large intestine where it is expelled from the body.

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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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