Suppose evolution on earth has occurred in such a way that there are 96 amino acids instead of 20 and DNA has 12 different types of nitrogen bases. DNA synthesis however occurs in the same way as today. The minimum number of bases per DNA codon would be

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Solution

The correct option is C 2
If one base is coding one amino acid, then $(12)^{1}$ = $12$ amino acids.
But we have 96 amino acids. Suppose two bases form one codon, then $(12)^{2}$ = $144$ . It is sufficient to code 96 or 20 amino acids.
So, the correct answer is '2.'.

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Suppose evolution on earth has occurred in such a way that there are 96 amino acids instead of 20 and DNA has 12 different types of nitrogen bases. DNA synthesis however occurs in the same way as today. The minimum number of bases per DNA codon would be

The correct option is C 2If one base is coding one amino acid, then (12)1 = 12 amino acids.But we have 96 amino acids. Suppose two bases form one codon, then (12)2 = 144. It is sufficient to code 96 or 20 amino acids.So, the correct answer is '2.'.

The correct option is C 2
If one base is coding one amino acid, then $(12)^{1}$ = $12$ amino acids.
But we have 96 amino acids. Suppose two bases form one codon, then $(12)^{2}$ = $144$ . It is sufficient to code 96 or 20 amino acids.
So, the correct answer is '2.'.