If John has schizophrenia, how likely is it that his monozygotic twin brother will also have schizophrenia?

A. John's brother will also have schizophrenia.
B. There is an 80% probability that John's brother will have schizophrenia.
C. There is a 50% probability that John's brother will have schizophrenia.
D. John's brother will not have schizophrenia.


Answer: C

Psychology

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