Twin studies have found about a ______ percent concordance rate for the occurrence of schizophrenia among pairs of monozygotic (identical) twins.

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Twin studies have shown that if one identical (monozygotic) twin has schizophrenia, the other twin has about a 40-50% chance of developing the condition as well, indicating a significant genetic component to the disorder.

Twin Studies Have Found About a ______ Percent Concordance Rate