Manipal Medical Manipal Medical Solved Paper-2009

  • question_answer
    Palaeontologists unearthed a human skull during excavation, A small fragment of the scalp tissue was still attached to it. Only little DNA could be extracted from it. If the genes of the ancient man need to be analysed, the best way of getting sufficient amount of DNA from this extract is

    A)  hybridising the DNA with a DNA probe

    B)  subjecting the DNA to polymerase chain reaction

    C)  subjecting the DNA to gel electrophoresis

    D)  treating   the   DNA  with   restriction endonucleases

    Correct Answer: B

    Solution :

     The Polymerase Chain Reaction (PCR) is a technique by which small samples of DNA can be quickly amplified. Starting with only one gene sized piece of DNA, this technique is used to make literally billions of copies in only a few hours.


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