Twin studies, to assess heritability of sexual orientation, found which of the following?

Question

Quizplus · Accepted Answer

Twin studies have shown that between fifty and sixty percent of identical twins were both homosexual if their twin was homosexual. This suggests a moderate heritability factor for sexual orientation, although environmental factors can also play a role. Option A is incorrect as there is evidence of heritability for sexual orientation. Option C is partially correct, as there is a heritability factor for women as well, but it is not as strong as it is for men. Option D is incorrect as not all identical twins both identify as homosexual, suggesting that environmental factors also play a role.

Twin Studies, to Assess Heritability of Sexual Orientation, Found Which