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Human Heredity: Principles and Iss...

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

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 6, Problem 20QP
Textbook Problem
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Name and describe the theory that deals with embryo–uterus interaction that explains the relationship between advanced maternal age and the increased frequency of aneuploid offspring.

Summary Introduction

To describe: The theory that deals with embryo-uterus interaction and explains the relationships between advanced maternal age and increased frequency of aneuploid offsprings.

Introduction: Aneuploidy is the condition where an individual has an extra chromosome or less in their ploidy. Humans have 46 chromosomes, which are present in pairs of two. This increase or decrease in chromosomal number leads to severe genetic abnormalities.

Explanation of Solution

Pictorial representation: Fig.1 represents aneuploidy in oocytes according to maternal age.

Fig.1: Aneuploidy in oocyte according to maternal age.

As women ages the chances of having an aneuploid pregnancy increases. It is because women’s eggs are as old. Females have all of their eggs in the fetal stage; therefore, they are born with all the eggs they will have in their lifetime. In the case of males, sperm is made every 65-75 days; it is not as old as an egg...

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