Twins and sexual orientation


- Identical Twin Studies Prove Homosexuality is Not Genetic

Arch Sex Behav. Jun;22(3) Homosexual orientation in twins: a report on 61 pairs and three triplet sets. Whitam FL(1), Diamond M, Martin J.




A number of twin studies have attempted to compare the relative and environment in the determination of sexual orientation.












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Same genes and childhood, different sexual orientation. They are identical twins, meaning their genes are, well, identical, and they were.

Description:Twin studies[ edit ] A number of twin studies have attempted to compare the relative importance of genetics and environment in the determination of sexual orientation. Self reported zygosity , sexual attraction, fantasy and behaviours were assessed by questionnaire and zygosity was serologically checked when in doubt. Other researchers support biological causes for both men and women's sexual orientation. Women showed a statistically non-significant trend to weaker influence of hereditary effects, while men showed no effect of shared environmental effects. The use of all adult twins in Sweden was designed to address the criticism of volunteer studies, in which a potential bias towards participation by gay twins may influence the results; Biometric modeling revealed that, in men, genetic effects explained. Corresponding estimates among women were.

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Views: 2441 Date: 2018-08-12 Favorited: 12 favorites

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