Anticodon Article 1 DNA 1 DNA sequence 1 DNA symmetry 1 DNA virus 1 DNA viruses 1 Evolution, Molecular 1 Genetic Code 1 Genetic code symmetry 1 Mitochondrial code 1 Nuclear code 1 Purines 1 Pyrimidines 1 RNA 1 RNA virus 1 RNA, Transfer 1 Standard genetic code 1 algorithm 1 anticodon 1 chemical compound 1 codon 1 controlled study 1 genetic code 1 genetics 1 mitochondrial DNA 1 mitochondrial genetics 1 molecular evolution 1 molecular recognition 1 nonhuman 1