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  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2008

  • question_answer
    Downs syndrome occurs as a result of

    A)  trisomy                               

    B)  tetrasomy

    C)  autopolyploidy                

    D)  allopolyploidy

    Correct Answer: A

    Solution :

                    Downs syndrome is caused due to trisomy of 21st chromosome. It is characterized by mental retardation, short stature with stubby fingers and heart defects.


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