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  3. SSC

SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-15

  • question_answer
    In laboratory, first time synthesis of DNA was done by-

    A) Stanley Miller                

    B) Har Gobind Khorana

    C) Hugo de vries

    D) Melvin Ellis Calvin

    Correct Answer: B

    Solution :

    DNA synthesis is the natural or artificial creation of deoxyribonucleic add molecules. Synthesis of the first complete gene (a yeast tRNA) was demonstrated by Har Gobind Khorana and co-workers in 1972.


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