Malcolm's mother has schizophrenia, as does his cousin. Malcolm fears he has inherited the "schizophrenic gene" and will develop schizophrenia. Which of the following statements best reflects current scientific understanding of the role of genetics in the likelihood of Malcolm developing schizophrenia?
A. Genetic factors create a predisposition or likelihood-not a certainty-that certain behaviors or disorders will develop.
B. Current research suggests that there is a cluster of genes that define whether or not an individual will develop schizophrenia.
C. The presence of a supportive father in the home will eliminate the possibility of Malcolm developing schizophrenia.
D. Proper nutrition and exercise can prevent the expression of schizophrenic genes.
Answer: A
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