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  1. Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a ‘triplet’
    1. Hershey and Chase
    2. Morgan and Sturtevant
    3. Beadle and Tantum
    4. Nirenberg and Mathaei
Correct Option: D

Nirenberg and Mathaei (1961) experimentally proved that a single amino acid is determined by a sequence of three nitrogen bases. The sequence of three nitrogen bases determining a single amino acid is called a triplet code. Nirenberg and Mathaei experiments cracked the DNA and discovered unequivocally that a genetic code is a triplet.



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