A member asked:

Does the guy determine the sex of the baby?

A doctor has provided 1 answer

Yes: Maternal contribution to the offspring is limited to her female sex chromosome. Since a pair of x's make her female, that is all she can put into an egg. A male has an x and a y chromosome, so ~half his sperm carry an x and half carry a y. At fertilization the mothers x joins dad's x or y and a girl or boy will result.

Answered 1/22/2013

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If a guy was born a crack baby will his children be a crack babies as well?

5 doctors weighed in across 3 answers