Class 12th Biology 2014 Set1 Delhi Board Paper Solution
Question 12
(i) Name the scientist who suggested that the genetic code should be made of a combination of three nucleotides.
(ii) Explain the basis on which he arrived at this conclusion.
Answer
(i) George Gamow suggested that the genetic code should be made up of a combination of three nucleotides.
(ii) He proposed that if 20 amino acids are to be coded by 4 bases, then the code should be made up of three nucleotides. 43 = 64 (42 = 16), which is less than 20. So, the codon was proposed to be triplet.
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