one twin is homosexual were solicited through announcements in the gay press Thirty-eight pairs of monozygotic twins (34 male pairs and 4 female pairs ).
have larger dental crowns (a male trait) than either SS female twins or singletons .. readers of gay publications, and reliance on indirect evidence. Specifically.
Female fetuses gestated together with a male co-twin are thought to be One of these ways is to study opposite-sex (boy/girl) twins: fetuses . both don't fit the stereotypical gender behaviour but I ended up being gay and her.
and 4 female pairs) were found to have a concordance rate of 65.8% for homosexual . This research was begun in 1980, soliciting gay and lesbian twins re-.