On the basis of these data, what conclusion can you draw concerning the roles of genetic and environmental factors in drug abuse? Genetic and environmental factors do not contribute to drug abuse. Genetic and environmental factors contribute to drug abuse. Only environmental factors contribute to drug abuse. Only genetic factors contribute to drug abuse.
On the basis of these data, what conclusion can you draw concerning the roles of genetic and environmental factors in drug abuse? Genetic and environmental factors do not contribute to drug abuse. Genetic and environmental factors contribute to drug abuse. Only environmental factors contribute to drug abuse. Only genetic factors contribute to drug abuse.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:M. T. Tsuang and colleagues studied drug dependence in male twin pairs. They found that 82 out of 313 monozygotic twin pairs
were concordant for abuse of one or more illicit drugs, whereas 40 out of 243 dizygotic twin pairs were concordant for the
same trait.
Calculate the concordances for drug abuse in these monozygotic and dizygotic twins.
concordance rate for monozygotic twins :
concordance rate for dizygotic twins :
Transcribed Image Text:On the basis of these data, what conclusion can you draw concerning the roles of genetic and environmental factors in
drug abuse?
O Genetic and environmental factors do not contribute to drug abuse.
Genetic and environmental factors contribute to drug abuse.
Only environmental factors contribute to drug abuse.
Only genetic factors contribute to drug abuse.
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