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
[https://en.wikipedia.org/wiki/Human_sex_ratio](https://en.wikipedia.org/wiki/Human_sex_ratio)
It is slightly weighted toward boys. Estimated at around 105 boys to every 100 girls. There are many competing theories as to why this is.
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