AMU Medical AMU Solved Paper-1998

  • question_answer
    Gemini viruses are plant viruses with

    A)  circular single stranded RNA

    B)  circular single stranded DNA

    C)  linear single stranded DNA

    D)  linear single stranded RNA.

    Correct Answer: B

    Solution :

    : Gemini viruses are the plant viruses with circular, single-stranded DNA genomes that replicate through double-stranded intermediates. Because of their limited coding capacity, Gemini viruses supply only the factors required to initiate viral replication and depend on host DNA polymerases to amplify their genomes. Many gemini viruses replicate in differentiated plant cells that no longer contain detectable levels of host DNA polymerases and associated factors.


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