Alice and Jane are identical twins. Alice has been diagnosed with schizophrenia. According to twin studies, Jane has roughly a _____ percent risk of developing schizophrenia at some point in her life.

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Twin studies have consistently shown that if one identical twin has schizophrenia, the other twin has approximately a 50% chance of developing the disorder. This suggests a strong genetic component in the development of schizophrenia.

Alice and Jane Are Identical Twins