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    Combined Science GCSE

    Sex chromosomes

    What Sex chromosomes means in Combined Science GCSE, as defined for AQA.

    Definitions of Sex chromosomes

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    Reference: AQA

    The pair of chromosomes that in males are not the same: one is a large X chromosome and the other is a much smaller Y chromosome, written XY.
    AQA · Sex determination (study guide)
    The chromosomes that determine sex, being XX in typical females and XY in typical males.
    AQA · Genetic inheritance (study guide)
    The remaining pair of chromosomes, XX in females and XY in males.
    AQA · Sex determination (study guide)

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