When a woman is pregnant, is the chance of having a girl or boy equal 50/50? Or are there like some biology stuff determining the odds?
In: Biology
There is a very weak difference in chances depending on if the woman is not ovulating yet, if the sperm is X and not Y they tend to last a tiny bit longer whereas Y are a very slight bit faster to get to the egg if the egg has already left the fallopian tubes.
The difference is so small it is practically negligible.
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