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  5. Principle Of Inheritance And Variation

12th Class Biology Principle Of Inheritance And Variation Question Bank MCQs - Principles of Inheritance and Variation

  • question_answer
    In Down's syndrome (Mongolism) each cell has how many chromosomes:

    A) 21st pair having one less

    B) 23rd pair with one less

    C) 45 chromosomes

    D) 47 chromosomes

    Correct Answer: D

    Solution :

    47 chromosomes


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