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The sex of a baby at fertilization is determined by the chromosomes the baby possesses. If these chromosomes are XY it's a boy. If they are XX, it's a girl.

http://en.wikipedia.org/wiki/XY_sex-determination_system

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15y ago

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How baby boy or baby girl is formed during fertilization?

I had sex with justin bieber and now i have a baby boy


Which parent determins a child's gender?

I believe the father of the baby determines the sex of the baby.


Who determines the sex of the baby in humans?

The father determines the sex of the baby in humans. Sperm cells contain either an X or Y chromosome, and the sperm that fertilizes the egg will determine the sex of the baby. If the sperm carries an X chromosome, the baby will be female, and if it carries a Y chromosome, the baby will be male.


Who makes the sex of the baby?

The chromosome in the male's gamete determines the gender of the baby. If it is a Y chromosome, the baby will be a boy. If the chromosome is a X, the baby will be a girl.


Is husband reason of baby gender?

Yes, the male determines the sex of a baby. He possesses the either X or Y chromosome. The X is a girl I believe & the Y is a boy, I'm pretty sure that that's what they stand for. I'm positive that the male determines the sex of a baby though.


Can womens eggs determine the sex of baby?

No, it is the sperm that determines the sex of the baby. Sperm carry either an X or a Y chromosome, and when one of them fertilizes the egg, the resulting combination will determine the baby's sex (XX for female, XY for male).


When you are older you really want your first-born to be a boy but it is the male that determines the sex of the baby. Is there a way you can make sure your baby is a boy?

NO


Is external fertilization sexual or asexual?

Well, there is fertilization in sexual reproduction, but there is not fertilization in asexual because the female reproductive system needs help with the male reproductive system through sex. Without sex, it is asexual. Females need the males sperm in order to fertilize the baby or plant.


What determines the genes that determines the sex?

the answer is sex chromosomes


Is it possible to set sex of baby by test tube?

I believe you meant to ask is it possible to know the sex of a baby conceived by inviro fertilization also called test tube baby. Of course like a normal baby a test tube baby too has xx or xy chromosomes and the sex can be determined actively while the fetus is growing. Also like a normal baby ultrasonograph can reveal the sex of the child.


What do men need to have a baby?

In order to physically have a baby, a man would need female hormones, at least one of two functioning ovaries to produce eggs, a uterus for the egg to implant, and a means of fertilization (i.e. sex with a male or medically assisted fertilization).


Does panda have to sex make a baby?

Im assuming you mean "Do pandas have to have sex to make a baby?" In most cases yes, however, there is a procedure known as "In Vitro Fertilization", in which an egg is fertilized in a lab, and implanted into the womb. This makes it possible to become pregnant without having sex.