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A teratogen is an agent that produces nongenetic abnormalities during embryonic or fetal development. Suppose a teratogen is present at conception. As a result, during the first mitotic division the centromeres fail to divide. The teratogen then loses its potency and has no further effect on the embryo. What is the chromosomal complement of this embryo?

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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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Section
BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 6, Problem 12QP
Textbook Problem
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A teratogen is an agent that produces nongenetic abnormalities during embryonic or fetal development. Suppose a teratogen is present at conception. As a result, during the first mitotic division the centromeres fail to divide. The teratogen then loses its potency and has no further effect on the embryo. What is the chromosomal complement of this embryo?

Summary Introduction

To determine: The chromosomal complement of the embryo formed after treating cells with teratogen.

Introduction: Teratogens are those substances which inhibit or disturb the development of an embryo. The birth defects also caused by certain teratogens. Certain chemicals and drugs are used as teratogens.

Explanation of Solution

Inhibition of centromere division will result in nonseparation of chromatids similar to nondisjunction. After cytokinesis two cells are produced in which one cell has all the chromosomes, and another cell has cytoplasm only...

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