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    science
    Grade-10
    Easy

    Question

    Differences in DNA between individuals or populations

    1. Environmental Variation
    2. Species
    3. Genetic Variation
    4. Adaptive Feature

    Hint:

    Basis of heredity.

    The correct answer is: Genetic Variation

      Variation refers to the difference that exists between individuals of same population, making them unidentical.
      This phenomenon of variation can be caused by two factors, namely:
      1. Genes
      2. Environmental conditions
      Certain traits like eye color, blood groups are all determined by the genes (a sequence of DNA that codes for a trait or protein) that are inherited from the parents. This type of variation is called genetic variation.
      Other traits like hair length, muscle strength all depend on the influence of environment or the individual itself. This type of variation is called  environmental variation.

      • Gene is a segment of DNA that codes for particular trait
      • Gene is the unit of heredity
      • Variation refers to difference existing between individuals of same population
      • Variation can be due to effect of genes or environment or both

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