how girl is born and how boy is born
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Explanation:
Girls are born when there is xx chromosome in the embryo's cells while boys are born when there is by chromosome in the embryo in the initial stages
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Explanation:
The sex of a baby is determined by the type of the sex chromosome present in the fertilized egg.
- If sperm carrying X chromosome fertilising an egg cell which carries X chromosome, then the zygote formed will have combination of xx chromosome due to the child born will be a girl.
- If sperm carrying Y chromosome fertilizers in a egg Cell which carries X chromosome, then the zygote formed will have xy combination of sex chromosomes which means that the child born is a boy.
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