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Does genetic combination of mothers play...

Does genetic combination of mothers play a significant role in determining the sex of a new born?

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No, mothers have no role in determining the sex of a new born. As the 23rd pair of chromosomes in female cells have a pair of X chromosomes, all children will inherit an X chromosome from the mother. As males have both X and Y chromosome as the 23rd pair, it is the father who determines the sex of a new born.
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