Research on the genetics of drug dependence indicates that |
A | ) | alcoholism and smoking are independent diseases. | |
B | ) | alcoholism and smoking share common genetic factors. | |
C | ) | smokers are high in status and achievement, but low in sensation seeking. | |
D | ) | alcoholics are high in status and achievement, but low in sensation seeking. | |
E | ) | environment plays a minimal role in drug abuse. |