1-63The Fact That a Significant Number of Monozygotic Twins Share

question 33

Multiple Choice

1-63.The fact that a significant number of monozygotic twins share the same placenta,while no dizygotic twins do,suggests that

• A)we may have overestimated the influence of genetics in schizophrenia.
• B)being a monozygotic twin is a risk factor for schizophrenia.
• C)genetic influences are even more important than previously thought.
• D)monozygotic twins have a form of genetic schizophrenia while dizygotic twins have an environmentally caused form.