id author title date pages extension mime words sentences flesch summary cache txt cord-313301-7mkadtp9 Duffy, Siobain EVOLUTION OF HOST SPECIFICITY DRIVES REPRODUCTIVE ISOLATION AMONG RNA VIRUSES 2007-08-23 .txt text/plain 6091 273 45 In particular, the high pernucleotide mutation rates of RNA viruses (Drake 1993) provide extensive genetic variation that fuels evolution by natural selection, making the study of reproductive isolation and speciation especially feasible (Holmes 2004) . We tested the plausibility of the no-gene mechanism of speciation by examining the consequences of adaptation to a novel host in laboratory populations of the RNA phage 6, which infects a number of Pseudomonas species. The same microevolutionary processes of mutation and natural selection, which led to the adaptation of 6 populations to a novel host also resulted in a macroevolutionary event: the evolution of a new virus species that is reproductively isolated from the ancestral phage 6 wt . Beyond uniquely demonstrating the evolution of reproductive isolation in the laboratory, our study extends the literature describing the evolutionary genetics of narrowed host range when viruses adapt to a single host. ./cache/cord-313301-7mkadtp9.txt ./txt/cord-313301-7mkadtp9.txt