What Have Twin Studies Told Us About Sexual Orientation

question 198

Multiple Choice

What have twin studies told us about sexual orientation?

• A) Twin studies are clear in supporting that sexual orientation is influenced only by genetic factors.
• B) Twin studies clearly do not support the idea that sexual orientation is influenced by genetics.
• C) Although supporting a genetic influence on sexual orientation, twin studies do not rule out environmental influences as a contributor.
• D) Twin studies have not been done in the matter of sexual orientation.

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