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NEET Sample Paper NEET Sample Test Paper-80

  • question_answer
    Thymine is a pyrimidine derivative in which the 5' HC position have group but uracil have hydrogen at 5' C position.

    A) OH                             

    B) \[N{{H}_{2}}\]

    C) \[C{{H}_{3}}\]                       

    D) \[{{C}_{2}}{{H}_{3}}\]

    Correct Answer: C

    Solution :

    Uracil another pyrimidine derivative is replaced by thymine in DNA. It was discovered in 1900 isolated by hydrolysis of yeast nuclein. The difference between thymine and uracil is that thymine has a methyl group \[C{{H}_{3}}\] instead of hydrogen at 5? C position.


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