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Q.
Which of the following amino acids is coded by only single codon?
NTA AbhyasNTA Abhyas 2020Molecular Basis of Inheritance
Solution:
The amino acid tryptophan is coded solely by a single codon of UGG. Tyrosine is coded by two different codons: UAU and UAC, phenylalanine is coded by two codons: UUU and UUC, and isoleucine is coded by 3 codons: AUU, AUC and AUA.