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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 7, Problem 14QP
Textbook Problem
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Sex-Influenced and Sex-Limited Traits

What method of sex testing did the International Olympic Committee previously use? What method did it use subsequently? Does either of these methods conclusively test for “femaleness?” Explain.

Summary Introduction

To determine: The method of sex testing used by the International Olympic Committee previously.

Introduction: Several methods are used in athletics to prevent the participants from cheating in the highly acclaimed competitions such as Olympics. Rumors about male candidates attempting to compete as female candidates in order to enhance their performance began spreading in 1960. This prompted the International Olympic Committee to make sex testing for all female candidates mandatory, beginning with 1968 Olympic Games.

Explanation of Solution

The method of sex testing used by the International Olympic Committee previously is as follows:

  • The Barr bodies in cells collected by scraping the inside of the mouth were tested.
  • Genetic females have XX, sex chromosomes and the Barr body is formed by the inactivated X chromosome.
  • The Barr body can be viewed under a microscope after staining.
  • The genetic males have XY, sex chromosomes and they do not form Barr bodies...
Summary Introduction

To determine: The method of sex testing used by the International Olympic Committee subsequently.

Introduction: Several methods are used in athletics to prevent the participants from cheating in the highly acclaimed competitions such as Olympics. Rumors about male candidates attempting to compete as female candidates in order to enhance their performance began spreading in 1960. This prompted the International Olympic Committee to make sex testing for all female candidates mandatory, beginning with 1968 Olympic Games.

Summary Introduction

To determine: Whether either of these methods conclusively test for “femaleness” or not.

Introduction: Several methods are used in athletics to prevent the participants from cheating in the highly acclaimed competitions such as Olympics. Rumors about male candidates attempting to compete as female candidates in order to enhance their performance began spreading in 1960. This prompted the International Olympic Committee to make sex testing for all female candidates mandatory, beginning with 1968 Olympic Games.

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