If one identical twin is homosexual or bisexual, what is the percentage chance that the other twin is, too?

Name: If one identical twin is homosexual or bisexual, what is the percentage chance that the other twin is, too?
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Studies on twins suggest that if one identical twin is homosexual, there is about a 50% chance that the other twin will also be homosexual. This suggests a significant genetic component to sexual orientation, although environmental factors also play a role.

If One Identical Twin Is Homosexual or Bisexual, What Is