The electronic version of this article is the complete one and can be
found online at http://jbiol.com/content/2/2/12
Mutations are the ultimate fuel for evolution, but most mutations have a negative effect on fitness. It has been widely accepted that these deleterious fitness effects are, on average, magnified in stressful environments. Recent results suggest that the effects of deleterious mutations can, instead, sometimes be ameliorated in stressful environments.
The Spanish Consejo Superior de Investigaciones Científicas (CSIC)
funds S.F.E., and J.A.G.M.dV. is funded by a fellowship from the Netherlands
Organization of Scientific Research (NWO).
Peer reviewed