Studies of genetic variation involving the DRD2 gene affecting dopamine indicates ____.
A)an increased risk for alcoholism, nicotine, cocaine, and opium dependence
B)environment is a stronger predictor of substance dependence than genes
C)no biological markers have been found yet that show a genetic link with addiction.
D)he relationship between genes and addiction is weak

Question

Quizplus · Accepted Answer

Studies have shown that variations in the DRD2 gene affect dopamine in the brain, leading to an increased risk for addiction to alcohol, nicotine, cocaine, and opium. This suggests there is a genetic link to addiction.

Studies of Genetic Variation Involving the DRD2 Gene Affecting Dopamine