Genetic code was deciphered by chemically synthesizing the trinucleotides by

Watson & Crick

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Beadle & Tatum

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Briggs & King

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M. W. Nirenberg

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Solution

The correct option is D M. W. Nirenberg
Marshall Nirenberg and Heinrich J. Matthaei were the first to elucidate the nature of a codon in 1961 at the National Institutes of Health. They used a cell-free system to translate a poly-uracil RNA sequence and discovered that the polypeptide that what they had synthesized consisted of only the amino acid phenylalanine.They, thereby, deduced that the codon UUU specified the amino acid phenylalanine.

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