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Genetics and Social Behavior Of the following findings, which does not support the idea that alcoholism is genetic? a. Some strains of mice select alcohol over water 75% of the time, whereas others shun alcohol. b. The concordance value is 55% for MZ twins and 28% for DZ twins. c. Biological sons of alcoholic men who have been adopted have a rate of alcoholism more like that of their adoptive fathers. d. There is a 20% to 25% risk of alcoholism in the sons of alcoholic men. e. None of these.

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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 18, Problem 17QP
Textbook Problem
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Genetics and Social Behavior

Of the following findings, which does not support the idea that alcoholism is genetic?

  1. a. Some strains of mice select alcohol over water 75% of the time, whereas others shun alcohol.
  2. b. The concordance value is 55% for MZ twins and 28% for DZ twins.
  3. c. Biological sons of alcoholic men who have been adopted have a rate of alcoholism more like that of their adoptive fathers.
  4. d. There is a 20% to 25% risk of alcoholism in the sons of alcoholic men.
  5. e. None of these.

Summary Introduction

Introduction: The role of genes in the alteration of an individual’s social behavior by the modulating the neural circuits of the brain. A number of changes are observed in the social behavior of the organism when there is an alteration in the gene.

Explanation of Solution

Reason for correct answer:

Some strains of the mice choose alcohol over water. However, the remaining population does not select water and provides the idea that alcoholism is genetic. The observed value for alcoholism in dizygotic twins and monozygotic twins supports the idea that alcoholism is genetically related. The chances that biological sons from the fathers which are alcoholics show a close rate of alcoholism with their fathers give the criteria that alcoholism is genetic. In the finding of the percentage of alcoholism in sons of alcoholic men provides the basis that alcoholism is genetic.

Option e. is given as “none of these.”

The criteria that do not support the idea that alcoholism is genetic is “none of these.” Hence, the correct answer is option e.

Reason for incorrect answer:

Option a. is given as “Some strains of mice select alcohol over water 75% of the time, whereas others shun alcohol.”

The mice go for the alcohol over water which shows the criteria that alcoholism is genetic...

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