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    Question

    Variation within a pureline is due

    to
    A Genetic causes Correct Answer Incorrect Answer
    B Environment Correct Answer Incorrect Answer
    C Both (A) and (B) Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    Variation within a pureline is entirely due to environmental factors. Purelines are genetically uniform, meaning all individuals within the line share the same genotype. Therefore, any observed differences in traits (phenotypes) are a result of the environment influencing the expression of those genes. 

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