What is the legal age for marriage for girls and boys?


Legal age for marriage is 18 years for girls and 21 years for boys.

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Who is responsible for sex determination of a child, mother or father?


The sex chromosomes of father determines the sex of the baby.

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What type of chromosomes occur in sperms?


Sperms has either X chromosome or Y chromosome.

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Why is adolescence called teens?


Adolescence is called teens because it covers 13 to 18 or 19 years of age. 

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What are the names given to sex chromosomes?


X and Y.

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