title: Q and A.
authors.affiliation: Department of Molecular, Cellular and Development Biology, University of Colarado 80309-0347, USA. nrpace@colorado.edu
authors.forename: Norman
authors.initials: N
authors.lastname: Pace
mesh_terms: D019143:Evolution, Molecular; D008829:Microbiology; D008967:Molecular Biology; D012313:RNA / Q000737:chemistry
chemical_list: D012313:RNA