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''For more information please see'': [[Homosexuality and Genetics]]

''For more information please see'': [[Homosexuality and Genetics]]

A common argument is that an inclination to homosexuality is inborn and immutable. It is widely believed that the public will become more accepting of homosexuality if they are convinced that it is inborn and immutable.  For example, [[Neuroscience|neuroscientist]] and homosexual Simon Levay stated: "...people who think that gays and lesbians are born that way are also more likely to support gay rights."<ref>http://www.family.org/socialissues/A000000682.cfm</ref>

A common argument is that an inclination to homosexuality is inborn and immutable. It is widely believed that the public will become more accepting of homosexuality if they are convinced that it is inborn and immutable.  For example, [[Neuroscience|neuroscientist]] and homosexual Simon Levay stated: "...people who think that gays and lesbians are born that way are also more likely to support gay rights."<ref>http://www.icna.org/family/index.php?option=com_content&view=article&id=26&Itemid=6</ref>

[[Causes of Homosexuality|Research into the issue of the origins of homosexuality]] suggests that adoptive brothers are more likely to both be homosexuals than the biological brothers, who share half their [[gene]]s which suggests that homosexuality is not genetically caused. <ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref> This data prompted the journal ''Science'' to report "this . . . suggests that there is no genetic component, but rather an environmental component shared in families".<ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref> However, in regards to [[psychosocial]] and biological theories in regards to the origin of homosexuality, [[Columbia University]] [[psychiatry]] professors Drs. William Byrne and Bruce Parsons stated in 1994: "There is no evidence that at present to substantiate a [[biology|biological]] theory. [T]he appeal of current biological explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data".<ref>http://www.cwfa.org/images/content/bornorbred.pdf</ref>

[[Causes of Homosexuality|Research into the issue of the origins of homosexuality]] suggests that adoptive brothers are more likely to both be homosexuals than the biological brothers, who share half their [[gene]]s which suggests that homosexuality is not genetically caused. <ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref> This data prompted the journal ''Science'' to report "this . . . suggests that there is no genetic component, but rather an environmental component shared in families".<ref>(''Science'', Vol. 262, page 2063, December 24, 1993)</ref><ref>http://www.trueorigin.org/gaygene01.asp</ref> However, in regards to [[psychosocial]] and biological theories in regards to the origin of homosexuality, [[Columbia University]] [[psychiatry]] professors Drs. William Byrne and Bruce Parsons stated in 1994: "There is no evidence that at present to substantiate a [[biology|biological]] theory. [T]he appeal of current biological explanations for sexual orientation may derive more from dissatisfaction with the present status of psychosocial explanations than from a substantiating body of experimental data".<ref>http://www.cwfa.org/images/content/bornorbred.pdf</ref>