We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleWaiting for two mutations: with applications to regulatory sequence evolution and the limits of Darwinian evolution.AuthorsDurrett R; Schmidt DPublicationGenetics, 2008, Vol 180, Issue 3, p1501ISSN0016-6731Publication typearticleDOI10.1534/genetics.107.082610