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19 May, 18:23

How many sex chromosomes are in a human gamete cell before fertilization

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  1. 19 May, 18:30
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    Answer: 23

    Explanation: One pair of the 23 chromosomes, known as sex chromosomes, determines at conception whether a fertilized egg will develop into a male or female. Today, human females have one pair of identical X chromosomes.
  2. 19 May, 18:41
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    23

    Explanation:

    If the sperm carries a Y chromosome, it will result in a male. During fertilization, gametes from the sperm combine with gametes from the egg to form a zygote. The zygote contains two sets of 23 chromosomes, for the required 46. Most women are 46XX and most men are 46XY, according to the World Health Organization.
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