As long as natural selection has been an accepted scientific theory, homosexuality has been a riddle for scientists. If a person is attracted to people of the same gender, he or she cannot have biological children with their chosen partner. For most of history, before in vitro fertilization, that meant that homosexuality could not be carried out genetically. In addition, because homosexuality makes it more difficult to have biological children, researchers could not understand how it was possible that the trait would survive across genetics. However, scientists believe that they may have cracked the code, and the answer does lie slightly in genetics.
View the original article here: Homosexuality’s Cause Isn’t Genetics, but the Answer Does Lie in the Womb