Tag Archives: xy chromosome gender

How a Baby’s XX Gender or XY Gender is Determined

Females have an XX pair of sex chromosomes, and males, an XY pair. A baby’s gender is determined by the sperm cell that fertilizes a woman’s egg. Sperm carry one sex chromosome, either a Y (male) or X (female). To better understand, let’s look at how sperm develop. A human sperm results from the division of a cell containing 46 ...

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