The concordance rate of schizophrenia for fraternal twins is about

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The concordance rate for schizophrenia in fraternal twins (dizygotic twins) is approximately 12%, indicating that if one fraternal twin has schizophrenia, there is about a 12% chance the other twin will also have the condition. This rate is higher than in the general population, suggesting a genetic component, but significantly lower than the concordance rate in identical (monozygotic) twins, which is much higher, reflecting the complex interplay of genetic and environmental factors in the development of schizophrenia.

The Concordance Rate of Schizophrenia for Fraternal Twins Is About