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16 November, 14:30

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

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Answers (2)
  1. 16 November, 16:39
    0
    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.
  2. 16 November, 18:21
    0
    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.
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