Dawdling polymerases allow introns time to splice.
Proudfoot
Nick J
NJ
D017498:Adenovirus E1 Proteins / Q000235:genetics; D007438:Introns / Q000502:physiology*; D012319:RNA Polymerase II / Q000502:physiology*; D012326:RNA Splicing / Q000502:physiology*; D012441:Saccharomyces cerevisiae / Q000235:genetics; D014158:Transcription, Genetic / Q000502:physiology
D017498:Adenovirus E1 Proteins; D012319:RNA Polymerase II