Penny has been diagnosed with a mood disorder.What is the likelihood that her identical twin will also be diagnosed with a mood disorder at some point in her lifetime

Question

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Studies have shown that there is a higher likelihood for identical twins (who share 100% of their genes) to both be diagnosed with a mood disorder compared to fraternal twins (who share only 50% of their genes). The exact percentage may vary depending on the specific type of mood disorder and other factors, but generally the likelihood for an identical twin to also be diagnosed with a mood disorder is around 65%.

Penny Has Been Diagnosed with a Mood Disorder