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Question
The number of triplet codons having all the three bases same in 64 triplet codons is
The number of triplet codons having all the three bases same in 64 triplet codons is
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Solution
The correct option is B 4
Three is the minimum number of nucleotides per codon needed to encode 20 amino acids. 20 amino acids are encoded by combinations of 3 nucleotides. If a codon were two nucleotides, the set of all combinations could encode only. 4x4 = 16 amino acids. With three nucleotides, the set of all combinations can encode. 4x4x4 = 64 amino acids i.e., 64 different combinations of four nucleotides taken three at a time.
Three is the minimum number of nucleotides per codon needed to encode 20 amino acids. 20 amino acids are encoded by combinations of 3 nucleotides. If a codon were two nucleotides, the set of all combinations could encode only. 4x4 = 16 amino acids. With three nucleotides, the set of all combinations can encode. 4x4x4 = 64 amino acids i.e., 64 different combinations of four nucleotides taken three at a time.
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