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  • meiosis
    • Meiosis is a different kind of cell division. It is used to produce male and female gametes
      • a human body cell contains 46 chromosomes arranged into 23 pairs
      • gametes are sperm or eggs and only contain 23 chromosomes
      • at fertilisation the nuclei of the sperm and egg join to form the zygote.
      • the chromosomes make identical copies of them selves
        • similar chromosomes pair up the swap the DNA


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