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    Combined Science GCSE

    Natural selection and evolution of resistance

    What Natural selection and evolution of resistance means in Combined Science GCSE, as defined for AQA.

    Definition of Natural selection and evolution of resistance

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    Reference: AQA

    Surviving bacteria are more likely to include individuals with random mutations that make them less affected by the antibiotic, and these reproduce so the resistant allele becomes more common in the population.
    AQA · Resistant bacteria (study guide)

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