CET Karnataka Medical CET - Karnataka Medical Solved Paper-2010

  • question_answer
    In genetic fingerprinting, the probe refers to a radioactively labelled

    A)  double-stranded RNA molecule

    B)  double-stranded DNA molecule

    C)  single-stranded DNA molecule

    D) single-stranded RNA molecule

    Correct Answer: C

    Solution :

    Probes are small nucleotide sequences, used to detect the presence of complementary sequences in nucleic acid samples. Both DNA and RNA are used as probes. Single-stranded DNA probes are more convenient and preferable but denatured double-stranded DNA molecules can also be used. The probes can either be labelled with radioactive \[(eg{{,}^{32}}p)\] or non-radioactive (eg, biotin) labels.


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