Originally posted by Nellinator
On another note I reread the link Adam gave concerning the genetic origin of homosexuality and read the classical four gene markers at position Xq28 of the X chromosome. This is outdated and false information. More recent studies have shown this.Male Homosexuality: Absence of Linkage to Microsatellite Markers at Xq28., By: Rice, George, Anderson, Carol, Risch, Neil, Ebers, George, Science, 00368075, 04/23/99, Vol. 284, Issue 5414
[list=1][*]The methodology of the study "Male Homosexuality: Absence of Linkage to Microsatellite Markers at Xq28" has been criticized with regards to the selection of subjects.
[*]According to the researchers at the University of Western Ontario who conducted the study in question, ". . . our data does not support the presence of a gene of large effect influencing sexual orientation," however, "these results do not preclude the possibility of detectable gene effects elsewhere in the genome."
This is consistent with subsequent studies by:
[list][*]Camperio-Ciani of the University of Padua—Italy, who found that there is no single "gay gene" but rather several genes responsible for sexual orientation. She identified that genetic components are indeed linked to the X chromosome and that there are other components likely to be on other chromosomes as well.
[*]Brian Mutanksi of the University of Illinois at Chicago in conjunction with Pennsylvania State University, the University of California—Los Angeles, the University of California—San Diego, the National Institutes of Health, and the National Science Foundation, who combed the entire human genome for genetic determinants of male sexual orientation, identifying them in stretches of DNA on chromosomes 7, 8, and 10.[/list][/list]