I am interested in genetic factors as well as any other biological features in the parents that affect the sex of the newborn child, as well as the prevalence of twins.
Something like this format:

enter image description here

If there is no such data, studies about the influence of any factors on sex and twins are welcome too.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.