Biology and sexual orientation
No matter why those genes are still around, we do know that being gay is partly genetic and partly determined before a baby is even born. This tells us that sexual orientation isn’t a learned behavior or a choice. Being gay is not a choice for people. Instead, it appears to be a fundamental part of who someone is.
Fact Check
Estimates as to the number of gay people in the population range from 1-in to 1-in, so why are some people gay? Are they gay by choice or is being gay genetic? The simplest answer is to look at the definition of the word "gay." The term gay is a synonym for homosexual, which is defined as, 1,2 "Of, pertaining to, or exhibiting sexual desire or behavior directed toward a person or persons. Posted March 13, Reviewed by Devon Frye. He explained that this split had come about over a disagreement about whether to accept LGBTQ persons into their congregations. Is a person ‘born gay’, or is being gay a learned behavior?
A massive study of half a million people finds no single gene behind sexual orientation, adding more evidence that there is no “gay gene”. By Sara Reardon. Controversial results released in suggested a genetic link between bisexuality and risk-taking , but many researchers found flaws in the methodology. Massive Study Finds No Single Genetic Cause of Same
The amygdala, a region of the brain, is more active in gay men than non-gay men when exposed to sexually arousing material. [] Finger length ratios between the index and ring fingers have been reported to differ, on average, between non-gay and lesbian women. [][][][][][][][][][]. Estimates as to the number of gay people in the population range from 1-in to 1-in, so why are some people gay? Are they gay by choice or is being gay genetic? 
What causes sexual orientation?
The scientific consensus on being "born gay" reveals a complex, multifaceted picture that challenges simplistic explanations while supporting biological foundations for sexual orientation. Nsikan Akpan Nsikan Akpan. In its stead, the report finds that human DNA cannot predict who is gay or heterosexual.
I was born this way
There is no single gene responsible for a person being gay or a lesbian. That’s the first thing you need to know about the largest genetic investigation of sexuality ever, which was published. .
Is There a “Gay Gene"?
Sexual orientation is shaped in prenatal development, but science shows that there are not only many ways of becoming gay but also many ways of being gay. . There is no ‘gay gene.’ There is no ‘straight gene
Other indirect evidence that homosexual people have experienced atypical early androgen exposure are morphological differences in gay men and lesbians compared to heterosexual individuals of the same sex, such as the relative length of the index to the ring finger, and the relative length of long bones in the legs, arms and hands. .