I must say that I cannot agree with all this talk about Big Vagina genes making big penises. Although I am nothing of a medical or scientific expert so I may be wrong, I do have solid logic for support.
Think about it- I really don't think that any part of the penis comes from the mother. We all know that we only get the X chromosome from our mothers, and as far as I know an X gene can't very well make a penis.
On the reverse though, a daughtor may get a large vagina gene from her father, as she does inherit the X gene from him.
I could be wrong, it has happened before, and it will happen again. But I don't think I am about this one.
That just can't be correct, and it's an extremely simplified view of genetics. The X and Y chromosomes determine your gender but you get half of your genetic makeup from each parent. Here's a perfect example. My body is almost completely derivitive of the men in my mother's family (not the women...interesting). My height and body type is visible in both my maternal grandfather and my maternal grandmother. I look a lot more like my mother than I do my father. I resemble my father in some aspects, but not that many. My brother also has height from my mother's side.
Now I ask you: How is it that I have many of the features of the men on my mother's side of the family if, according to you, I should only have her female attributes for some reason? The answer is obvious. My dad determines my gender, but my mother then MUST carry some designs of her male family members inside her DNA. Think of it as a blueprint for both sexes descendant of her family DNA (if male then this, if female then that) Otherwise I'd only have tits from mommy and a dick from daddy. Men and Women both have estrogen and testosterone inside them, just in varying amounts and they're a little varying from person to person.
If your idea is true, than that would mean the only way for this woman's son to carry a big penis gene is through the genes of the father. She herself stated that that's not true based on the father's average endowment. She also is apparently a very big size queen, and that implies the possibility that her vagina may very well be
designed to accomodate larger penises. But let's assume you're right (and the son's penis isn't a random mutation). Take it back even further. Why is her husband average? According to you, it can't be the mother, it must be the father, so therefore, the son's paternal grandfather is most likely average too. Why is the grandfather average?...
Your idea leaves no room for the mixing of DNA and traits. A human's genetic makeup is exactly the sum of its parts.
By the way, some scientists theorize that the size of the penis is determined by excess androgen hormones while still in the uterus...from the mother.
I wish I could find the thing I was reading about this...damn.