3 doctors weighed in:
What determines a baby's gender?
3 doctors weighed in

1 doctor agrees
In brief: See Below
Whether the fetus receives an x or y chromosome from the father. Y = girl x = boy.

In brief: See Below
Whether the fetus receives an x or y chromosome from the father. Y = girl x = boy.
Dr. Anthony LaBarbera
Dr. Anthony LaBarbera
Thank
1 comment
Dr. Carla Enriquez
Other way round: X = female. Y = male.
Dr. Megan Bird
Obstetrics & Gynecology
In brief: That is complicated
First, you may mean sex which is about the anatomy on a baby.
Whether they have a penis or a vagina. That is determined by the chromosomes of the sperm. Gender is whether a particular person feels male or female and how they express themselves. No one really knows how gender is determined but we seem to be born feeling like a boy or a girl.

In brief: That is complicated
First, you may mean sex which is about the anatomy on a baby.
Whether they have a penis or a vagina. That is determined by the chromosomes of the sperm. Gender is whether a particular person feels male or female and how they express themselves. No one really knows how gender is determined but we seem to be born feeling like a boy or a girl.
Dr. Megan Bird
Dr. Megan Bird
Thank
Get help from a real doctor now
Dr. Jonathan Jassey
Board Certified, Pediatrics
13 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors