How is the sex of human child determined
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mother always gives X chromosome
if the father gives X chromosomes then XX a girl is formed if father gives Y chromosome then it is boy with XY
if the father gives X chromosomes then XX a girl is formed if father gives Y chromosome then it is boy with XY
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A baby's sex is determined at the time of conception. When the baby is conceived, a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell, determining whether the baby will be female (XX) or male (XY).
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