Molecular Basis of Inheritance Question 67
67. Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a ’triplet'
(a) Hershey and Chase
(b) Morgan and Sturtevant
(c) Beadle and Tantum
(d) Nirenberg and Mathaei
Show Answer
Answer : d
Hints & Solution
(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.
