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KVPY Sample Paper KVPY Stream-SX Model Paper-8

  • question_answer
    A virus has a base ratio of \[\frac{(A+G)}{(U+C)}=1.\] What type of virus is this?

    A) A single-stranded DNA virus

    B) A double-stranded DNA virus

    C) A single-stranded RNA virus

    D) A double-stranded RNA virus

    Correct Answer: D

    Solution :

    The presence of U indicates a RNA virus. A and G are purines while U and C are pyrimidines. When ratio of purines: pyrimidines = 1, this suggests that there is complementary base pairing between the bases. Thus, this must be double-stranded ENA virus.


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