Boy or Girl: How Genetics Determine Your Baby's Gender

The process by which your baby becomes a boy or a girl, according to what's written in his or her genetic code, is awe-inspiring. Watch it all unfold.

Boy or Girl: How Genetics Determine Your Baby's Gender

The process by which your baby becomes a boy or a girl, according to what's written in his or her genetic code, is awe-inspiring. Watch it all unfold.

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