Double sets which one or more twin is actually homosexual are solicited through reports for the gay newspapers and personal referrals from 1980 for this. An 18-page survey of the “sexuality of twins” was actually completed by either twins. Thirty-eight couples of monozygotic twins (34 male pairs and 4 female couples) are found to have a concordance fee of 65.8per cent for homosexual placement. Twenty-three pairs of dizygotic twins had been realized to experience a concordance fee of 30.4per cent for homosexual direction. Furthermore, three units of triplets are obtained. Two sets contained some monozygotic twins concordant for intimate positioning on your third triplet dizygotic and discordant for homosexual alignment. A third triplet fix got monozygotic along with three concordant for homosexual placement. These studies include construed as supporting the debate for a biological base in intimate direction.
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