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 … Read More
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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 … Read More