For many years scientists are trying to find any genetic factor that determines homosexuality of the person. In the latter study was able to prove, orientation is partly dependent on blood group.
In total the study involved 7 thousand students from Canada. Scientists were interested in their sexual orientation, blood type, RH factors, eye color and hair.
The study revealed the strong Association between homosexuality, blood group and rhesus factor.
Among lesbians more often than usual to come across women with the blood group and RH-factors, gays dependence was expressed not so much.
Connection between eye color and hair orientation was found. Scientists plan to continue research to fully understand the sexual orientation of people.