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Describe sex determination in the human ...

Describe sex determination in the human beings.

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The sex of the child will be determined in human beings by the sex chromosome inherited from father.
Father has XY sex chromosomes in each of his cell. Two types of gametes (sperms) are produced based on chromosomes, `50%` sperms are with X chromosome and `50%` sperms are with Y chromosome.
When sperm bearing X chromosome fertilise the egg, girl is born and when sperm bearing Y chromosome fertilise the egg, son is born.
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