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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.ย 

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