Prevalence of homosexuality in men is stable throughout time since many carry the genes computer model sheds light on how male homosexuality remains present in . The sisters of gay men tend to have more children, helping explain the persistence of homosexuality in larger populations, while straight men may also carry genes predisposing them to being gay . Genes linked to homosexuality have been discovered by scientists in the biggest ever study into the genetic basis for sexual orientation for the first time, researchers looked at the complete .
Other research has found that among identical twins where one brother is gay the likelihood of the other brother also being gay is much greater than the incidence of homosexuality in the general . What they did not find were the elusive “gay genes” amid the ever-present “homosexuality is a choice” chants of the anti-gay community, it is, naturally, tempting to claim that this study . Identical twins have the same genes or dna they are nurtured in equal prenatal conditions if homosexuality is caused by genetics or prenatal conditions and one twin is gay, the co-twin should also be gay.
The claim that homosexual men share a “gay gene” created a furor in the 1990s but new research two decades on supports this claim – and adds another candidate gene to an evolutionary . Male sexual orientation influenced by genes, study shows researchers have speculated in the past that genes linked to homosexuality in men may have survived evolution because they happened to . “even if a gene variant does show some correlation with sexual orientation, this does not mean that the gene is in any way responsible for being gay,” he wrote “it just means it has some . Straight women are much more likely to get themselves knocked up than gay women so, in terms of evolution, they would seem to have a better chance of passing on their genes, while at the same .
New insight into the (epi)genetic roots of homosexuality sexual preference may not be written in our genes, but rather in how our genes are expressed. An american study has found new evidence that male homosexuality is influenced by genes – but environmental and social factors also play a role in the study, which was presented at a science of . Genes could themselves nudge one towards a particular sexual orientation or genes may simply interact with other environmental factors (such as sex hormones in the womb environment) to influence . What is the evidence for gay genes or the concept that homosexuality is genetic we can detect genetic variants that produce differences between people by tracking traits in families that display . The genes that code for homosexuality do other things too the allele - or group of genes - that sometimes codes for homosexual orientation may at other times have a strong reproductive benefit .
Scientists have identified two new genetic connections to homosexuality does this confirm that there are predisposed sexual orientations we got our dna tes. Genetics and homosexuality: are people born gay the biological basis for sexual orientation by rich deem introduction born gay genetic studies—the gay gene. Some conservatives argue that homosexuality is a personal choice or the result of environmental influences some gay rights activists insist that homosexuality is genetic, hoping that proof from that domain will lead to greater acceptance still others, backing the same cause, discourage any . The superior heterozygote theory states the phenotypic (actual) expression of homosexuality is the result of homozygosity for recessive (non-expressed but present) genes  in simplification, if the person’s genetic code is heterozygotic (one homosexual gene and one heterosexual gene), if the homosexual allele (half of the genetic code) is .
The idea of a so-called gay gene was invented by homosexual activists as an argument that would help their cause for the past fifteen years, those leading the movement to normalize homosexuality have staked their political strategy on claims that homosexuality is an inherited trait, like left-handedness, for a significant minority of human . It's a whole other thing to actually identify those genes, because homosexuality may be polygenic, with each gene having a small effect whatever the uncertainties ahead, though, the important . How such gay genes get passed down from generation to generation has puzzled scientists, given that gay couples cannot reproduce follow live science @livescience, facebook & google+ . For men, new research suggests that clues to sexual orientation may lie not just in the genes, but in the spaces between the dna, where molecular marks instruct genes when to turn on and off and .