The highest rates of current cigarette use are among _________

Gene imprinting results in the situation in which an extra chromosome or piece of chromosome is included in a person's genotype

Indicate whether the statement is true or false

Recent studies have reported an unexpected link between cannabis use and

a. severe mood disorders, including bipolar disorder. b. the onset of some dementias, including Alzheimer's disease. c. severe psychotic disorders, including schizophrenia. d. the onset of some motor system disorders, including Parkinson's disease.