title: On the road to a DNA-protein world.
mesh_terms: D004247:DNA / Q000235:genetics*; D004259:DNA-Directed DNA Polymerase; D012321:DNA-Directed RNA Polymerases; D019143:Evolution, Molecular; D008957:Models, Genetic; D009692:Nucleic Acid Heteroduplexes; D011506:Proteins / Q000235:genetics*; D012313:RNA / Q000235:genetics*; D016337:RNA, Catalytic
chemical_list: D009692:Nucleic Acid Heteroduplexes; D011506:Proteins; D016337:RNA, Catalytic; D012313:RNA; D004247:DNA; D012321:DNA-Directed RNA Polymerases; D004259:DNA-Directed DNA Polymerase