The science of being gay

As both blood type and Rh factor are genetically inherited traits controlled by alleles located on chromosome 9 and chromosome 1 respectively, the study indicates a potential link between genes on autosomes and homosexuality. No conclusive evidence supports any one specific cause of homosexuality; however, most researchers agree that biological and social factors influence the development of sexual orientation. Archived PDF from the original on 23 March Twin studies have received a number of criticisms including self-selection bias where homosexuals with gay siblings are more likely to volunteer for studies. Social attitudes Prejudice Violence.


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Biology and sexual orientation

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There were also no differences in anxiety scores between women and muxe nguiiu or muxe gunaa , or between the two types of muxes. In , Italian researchers conducted a study of about 4, people who were the relatives of 98 homosexual and heterosexual men. Rights and legal issues. No conclusive evidence supports any one specific cause of homosexuality; however, most researchers agree that biological and social factors influence the development of sexual orientation. By clicking continue below and using our sites or applications, you agree that we and our third party advertisers can:. Six of these men had died of AIDS-related illnesses. A study suggests linkage between a mother's genetic make-up and homosexuality of her sons.


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The most recent literature from the APA says that sexual orientation is not a choice that can be changed at will, and that sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors The biological theories reappraised". Without the gene, the mice exhibited masculine sexual behavior and attraction toward urine of other female mice. A later analysis by Hu et al. A number of sections of the brain have been reported to be sexually dimorphic; that is, they vary between men and women. American Journal of Sociology.


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