Question

what is the link between heredity and drug addiction?
a. substances cause people to have addicted genes.
b. everyone has genes that make it easy to become addicted to drugs.
c. some people have genes that make it easier for them to become addicted to drugs.
d. genes are not related to addiction.

Explanation:

• Option A is incorrect because substances don't cause people to have "addicted genes"; genes are inherited, not caused by substances.
• Option B is incorrect as not everyone has genes that make drug addiction easy; it varies among individuals.
• Option C is correct. Research in the field of genetics (related to heredity) shows that some individuals have genetic predispositions (specific genes) that can make them more susceptible to developing drug addiction. These genetic factors can influence things like how the brain responds to drugs, metabolism of drugs, etc., making it easier for those with certain genes to become addicted.
• Option D is incorrect as there is evidence that genes (heredity) do play a role in addiction susceptibility.

Answer:

C. Some people have genes that make it easier for them to become addicted to drugs.