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    Biology A (Salters-Nuffield) A-Level

    Evolutionary race

    What Evolutionary race means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.

    Definition of Evolutionary race

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    Reference: Pearson Edexcel

    Reciprocal selection in which host immune defences select pathogen variants that evade them, and those variants then select host variants better able to recognise the new antigens.
    Pearson Edexcel · Topic 6: Immunity, Infection and Forensics

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    Using Evolutionary race in the exam

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