title: Climbing Darwin's ladder.
authors.affiliation: The Scripps Research Institute, La Jolla, California 92037, USA.
authors.forename: G F
authors.initials: GF
authors.lastname: Joyce
mesh_terms: D019020:Directed Molecular Evolution; D019143:Evolution, Molecular; D009154:Mutation; D009841:Oligonucleotides / Q000737:chemistry; D009843:Oligoribonucleotides / Q000737:chemistry*; D016337:RNA, Catalytic / Q000138:chemical synthesis* / Q000737:chemistry; D012107:Research Design; D013698:Templates, Genetic
chemical_list: D009841:Oligonucleotides; D009843:Oligoribonucleotides; D016337:RNA, Catalytic