The evolution of a universal genetic code.
Some of the basic problems presented by the rapid evolution of a universal genetic code can be resolved by a mechanism of co-evolution of the code and the amino acids it serves.
D000596:Amino Acids; D005075:Biological Evolution; D003062:Codon; D005815:Genetic Code; D008954:Models, Biological; D000069497:Origin of Life; D014176:Protein Biosynthesis
D000596:Amino Acids; D003062:Codon