title: Coevolution theory of the genetic code: is the precursor-product hypothesis invalid?
authors.forename: Brian K
authors.initials: BK
authors.lastname: Davis
mesh_terms: D001226:Aspartate-tRNA Ligase / Q000378:metabolism*; D003062:Codon / Q000235:genetics; D019143:Evolution, Molecular; D005815:Genetic Code; D008957:Models, Genetic; D012346:RNA, Transfer, Amino Acyl / Q000235:genetics / Q000378:metabolism*
chemical_list: D003062:Codon; D012346:RNA, Transfer, Amino Acyl; D001226:Aspartate-tRNA Ligase