@applejack @Heil_Honkler @randbot Not gonna factor in the prevelance of severe parasitic infection found in homosexual men? Even if you say its genetic there has yet to be a concrete gene linked to the behavior.

@DerSauerkraut @Heil_Honkler @randbot "SNP study" means you compare genetics and traits and statistically root out ones likely to be doing something. It's weaker than twin studies because it has to deal with big averages, but it's still finding the actual specific genes involved with it. Combine that with twin and familial studies and it's fairly robust. Including whole countries like that Sweden study

Part of it is also just developmental. Birth order effect means that the more sons a woman has, the likelier they are to be gay, though it's not genetic or environmental exactly

Best explanation of it is the sexually antagonistic theory. Which basically means a portion of a woman's genetics retard male genetics and so become relatively more common. Ratio gained from that goes up with more sons, and that's why we only really find these things with gay men instead of lesbos. Explains birth order, genetic link, and low but stable population (even in other species)
https://slate.com/technology/2008/06/a-genetic-theory-of-homosexuality.html

Actually kinda similar to a cancer if you think about it

@applejack @Heil_Honkler @randbot It's known DNA from all partners and all children a woman has remains in the womb and affects every child she bares from that point forward. Its also known that a mother's brain exchanges neurons with the developing fetus via the spinal column. I wonder how these factors would skew the analysis and homo is genetic theory.