SSC General Science & Technology Sample Paper NCERT Sample Paper-7

  • question_answer
    Which one of the following techniques has helped to solve many mysteries involving murders, robberies and rapes?

    A)  Gene splicing                

    B)  Computer technology

    C)  DNA fingerprinting       

    D)  Gene cloning

    Correct Answer: C

    Solution :

    [c] DNA fingerprinting is a technique, by which an individual can be identified at molecular level. Scientists have chosen repeating sequences in the DNA, which are present in all individuals on different chromosomes, and are known to vary from individual to individual except in identical twins. These are used as genetic markers to identify the individual. DNA fingerprinting technology has made it possible to identify the source of biological samples found at scenes of crime. This will resolve disputes of maternity/paternity, identification of mutilated remains, identification of rape/murder, identification of missing child, exchange of babies in hospital wards, forensic wildlife, protection of farmers rights and biodiversity. This remarkable technology provides exclusion as well as positive identification with virtually 100% precision.

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