In a preliminary conference report, the researchers suggested that the variants are associated with heterosexuals having more sexual partners than usual, and that heterosexual men with some of the variants are more attractive than those without. Those traits would give heterosexuals a greater chance to pass the variants on to offspring, keeping those DNA differences in the gene pool. Ganna did not discuss those possibilities from the podium.
Diamond disagrees that researchers need to find a mechanism to explain the persistence of genetic variants linked to homosexuality. Same-sex behavior has never completely supplanted heterosexual mating in any species studied, she says. Only in the last 50 years have gay people tended to exclusively choose same-sex partners, she says. Ganna et al.
Large genome-wide analysis of sexual orientation identifies for the first time variants associated with non-heterosexual behavior and reveals overlap with heterosexual reproductive traits. Chemical tags on DNA appear to differ between gay and straight men. Science News. Sniffing out human pheromones. Science News Online, March 12, X chromosome again linked to homosexuality.
Genetic clue to male homosexuality emerges. Vol , July 7, , p. Get Science News headlines by e-mail.
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Health issues for gay men and men who have sex with men - Mayo Clinic
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What Does “Gay” Mean?
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Now go get tested!
It can hurt both the student who is targeted and anyone who hears it who may have a gay relative or friend. Using the name of any group of people as an insult is not OK, because it is most often based on negative stereotypes.
People can fall in love and want to be in a relationship with people of the same gender or with people of a different gender. The word gay means two people of the same gender, a man and a man or a woman and a woman, who love each other.