Danerys:
im curious, going up cup sizes and what not, im at about 266lbs and a d cup currently. if i chose to start gaining, do the breasts balance out with body size?
Enas:
Excuse me for my curiosity, i just thought about this and it really feels like a puzle to me right now. There are a few things i don't know, mostly, do Male to Female trans people get breasts transplanted? (stupid question, but!)
If yes then the DNA that they carry, propably determines, alongside with other factors such as diet, their growth.
If what i said above is also stupid, (and they don't get transplanted breasts) then things are more interesting, for example your biological sex is determined by the genes, (i forgot how exactly this goes) but at some point the first effect are hormones. So what about breasts? What are the genes for that? It makes sense in a way for them to be from your biological father, but on the other hand it also makes sence as munchies said, in a different way that, that they might look like the women's of your family. I don't know, maybe I'm overthinkimg, propably because i dont know stuff but i just thought it's an interesting, uuhmmm, problem to solve! I hope this doesn't feel offensive in anyway to you, im curious about that topic 😂
Or maybe I'm completely wrong and it has to do with hormones you take / took on your transition?
Depends on the person. Some have implants. Some don't. Also, even if a transperson has implants, this doesn't mean they won't experience breast growth even as they gain.
Also, both parents have genes for breast growth. OP's dad may not have breasts, but the other women in the dad's family probably do. Same goes for OP's mom. As such, when I say "women", I mean the women from both sides of her family.
It's no different from ciswomen, really.