Is there any genetic explanation for substance use disorders?
A) No; present studies are inconclusive, but the possibility of a conclusive finding remains.
B) Yes; although at present, only 10 chromosomes have genes related to substance use disorders, the explanation will probably end up being polygenic.
C) Maybe; there is one "twin" study that seems to support a genetic explanation.
D) Maybe; those with a substance use disorder are more likely than those without a disorder to have an abnormal D2 receptor gene.

Question

Quizplus · Accepted Answer

While a conclusive genetic explanation for substance use disorders has not yet been found, studies have found a correlation between substance use disorder and abnormal D2 receptor genes, making choice D the best option. Choice B is incorrect because more than 10 chromosomes are involved in substance use disorders, and choice C is incorrect because while one twin study suggests a genetic link, it is not enough evidence to conclusively support a genetic explanation. choice A is incorrect because there is a possibility of finding a conclusive genetic explanation in the future.

Is There Any Genetic Explanation for Substance Use Disorders