Sexual orientation cannot be predicted by a single “gay gene,” new research indicates.
Instead, a host of genetic and environmental factors play a role, according to a study published Thursday in Science Magazine. The findings provide insight into the complex genetics underlying human sexuality. But they do not explain it, wrote the international team of researchers who analyzed genetic data gathered from almost half a million people.
“Across human societies and in both sexes, some 2% to 10% of individuals report engaging in sex with same-sex partners, either exclusively or in addition to sex with opposite-sex partners,” wrote the study authors.
The study showed that sexual orientation “is not a single dimension and same-sex attraction is not inversely related to opposite-sex attraction, arguing for a more nuanced social understanding of sexual orientation that also includes bisexuality and asexuality,” said Neely.
In the end, genes cannot be used to predict who will be gay or straight.