I have five siblings, all of which are straight, my dad has been with atleast 3 women and has children with them. I have... 7? Uncles, all of which are married with children, most of which are married and I haven't heard of any of them being gay, except for me. I haven't the faintest idea of where I got it if it's genetic, but I guess the family was 'due'.
i have 4 half siblings through my dad and one full brother. two of my half siblings are gay. so for my dad half his kids are straight and half are gay. lol. and it's kinda a pattern too. from oldest to youngest it's: S, G, G, S, S, G. and there's a cousin on my mom's side too. so there's lots of gays in my family. haha
My friend is Pansexual, her brother is openly gay and his twin is gay but won't tell anyone because he doesn't want to be seen like his brother. I think its awesome and then her bf is a Bi chick and a fag-hag (which is awesome) so is her other sister who is a bf to her openly gay brother. I am the only openly gay person in my whole mothers side of like 50 people or more.
My aunt is a lesbian, and I'm close to thinking one of her kids is gay, but apart from her or me, I don't think there is any other gay people in my family.