The Triplet Genetic Code had a Doublet Predecessor

  title={The Triplet Genetic Code had a Doublet Predecessor},
  author={Apoorva D. Patel},
  journal={Journal of theoretical biology},
  volume={233 4},
Information theoretic analysis of genetic languages indicates that the naturally occurring 20 amino acids and the triplet genetic code arose by duplication of 10 amino acids of class-II and a doublet genetic code having codons NNY and anticodons GNN. Evidence for this scenario is presented based on the properties of aminoacyl-tRNA synthetases, amino acids and nucleotide bases. 


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