Changes

In any event, the search for a single "gay gene" largely misses the point. Sexual orientation is most likely caused by a complex interaction between a number of genes and the environment.  Homosexual ''behavior'', regardless of one's "orientation" is still voluntary and subject to control by the human will, just as heterosexual behavior is. Sex and intimacy, though, are basic necessities of human life, and acting on them, whether they be heterosexual or homosexual, is natural.  

In any event, the search for a single "gay gene" largely misses the point. Sexual orientation is most likely caused by a complex interaction between a number of genes and the environment.  Homosexual ''behavior'', regardless of one's "orientation" is still voluntary and subject to control by the human will, just as heterosexual behavior is. Sex and intimacy, though, are basic necessities of human life, and acting on them, whether they be heterosexual or homosexual, is natural.  

Work in molecular genetics has shown that certain genes may be mutated in order to cause homosexual behavior in fruit flies.  This evidence has lent support to the position that homosexuality could be genetically determined.<ref>http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=17994085&ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum</ref>

Work in molecular genetics has shown that certain genes may be mutated in order to cause homosexual behavior in fruit flies.  This evidence has lent support to the position that homosexuality could be genetically determined.<ref>http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=18066061&ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum</ref>

==Work of the Human Genome Project==

==Work of the Human Genome Project==