... that has begun to shed light on the timescales and processes through which non-functional transcriptional noise is co-opted to provide regulatory functions. We explore possible scenarios for sRNA origin, focusing on the co-option, or exaptation, of existing genomic structures which may provide protected...

... e-mail [email protected] Signalling the Future, a Biochemical Society-sponsored meeting held at University of Liverpool, Liverpool, 4–6 September 2002 6 September 2002 Copyright 2003 Biochemical Society 2003 evolution exaptation metaphors intercellular...