How come Some Ladies Just Offer Birth to Boys or Girls? A Genetic Explanation

How come Some Ladies Just Offer Birth to Boys or Girls? A Genetic Explanation

I am one of three siblings; my mother has three sisters, and my father has three siblings. My spouce and I have actually two girls. Nearly all of my very very first cousins are female—in reality, it is a long-running laugh that ladies take over both edges of my children and that you’ve got the patience of saints if you’re a male in my family (sorry, dad and bro!

I’ve heard for years—and my own OBGYN swore to me—that when considering to gender in utero, it’s the male that determines whether child exists feminine or male. Okay, fine. The“sperm that is fastest” determines gender. First got it.

But the reason when we meet a household with only daughters (such as for instance my mother along with her three siblings; no brothers) or even a family members that’s chock-full of only sons, we wonder: is sex in utero actually just 50/50, or do a little females around really give birth to just boys or just girls?

Interested, the experts were asked by me and also this is really what i consequently found out…

[…]