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  3. 12th Class
  4. Biology
  5. Principle Of Inheritance And Variation

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

  • question_answer
    Mental retardation in man associated with sex chromosomal abnormality is usually due to :

    A) Reduction in X complement

    B) Increase in X complement

    C) Moderate increase in Y complement

    D) Large increase in Y complement

    Correct Answer: B

    Solution :

    Increase in X complement


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