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The father's genetic contribution determines the sex of the baby. Women have XX chromosomes, men have XY (this is part of the definition of female and male). The male provides either X or Y to the woman's X. So if the man donates an X, the baby is XX and thus female. If he donates a Y, the baby is XY and thus male.
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∙ 14y ago
Wiki User
∙ 12y agothe father does
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How many months do you have to be to determine the sex of the baby?
the sex of the baby is determined at six months
Can you determine the sex of your baby by the heart rate?
no.
Can the shape of your belly determine the sex of the baby?
No.
Are there any pregnancy symptoms to determine the sex of the baby?
No the pregnancy test lone will not tell you the sex of the baby.
How can you determine the sex of baby before your pregnant?
subha
How soon can an ultrasound determine the sex of the baby?
How soon
Why does the father ultimately determine thesex if the baby?
The sex of a child is determined by the father because the genes that determine sex come from the male sperm.
Which parent determimes the baby's blood type?
The alleles for Immunoglobulins are carried on autosomal chromosomes, not on sex chromosomes. Hence, both parents are equally responsible for a baby's blood type.
What is 2 ways a karyotype can be used before a baby is born?
It is used to determine the sex of the baby and also to determine any abnormalities in chromosome.
Who determines the blood of a baby comes from de mom or pa?
Blood type is not a sex-linked trait. Both parents contribute equally to determine a child's blood type.
Why should you learn the sex of your fetus?
There are new blood tests that can determine the sex of a fetus at seven weeks. Finding out the gender of a baby can help expecting parents decide whether to test for serious sex-linked illnesses like muscular dystrophy and hemophillia.
Does the parents age affect the sex of a baby?
no it all in the genetics and the chromsomes
