Are the chances of getting a boy or girl equal?

Question

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

Answer 1

some polutants in environment can probably influence the ratio – https://www.theguardian.com/environment/2021/dec/02/sex-ratio-of-babies-linked-to-pollution-and-poverty-indicators