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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2001

  • question_answer
    Cause of Downs syndrome is due to :

    A)                          trisomy of 21st chromosome

    B)              trisomy of X chromosome

    C)              monosomy of 21s1 chromosome

    D)              none of the above

    Correct Answer: A

    Solution :

    Downs syndrome or mongolism is due to trisomy of 21st chromosome.


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