RAJASTHAN PMT Rajasthan - PMT Solved Paper-2005

  • question_answer
    Down syndrome in due to :

    A)  chromosome no. increase in 21st pair autosome

    B)  chromosome no. decrease in 21st pair autosome

    C)  chromosome no. increase in 18th pair autosome

    D)  chromosome no. decrease in 18th pair autosome

    Correct Answer: A

    Solution :

    Downs syndrome (or mongolism) is a congenital disorder of people which is caused by the trisomy y of chromosome 21.


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