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KVPY Sample Paper KVPY Stream-SX Model Paper-12

  • 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 by

    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 :

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


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