We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAllele substitution at a flower colour locus produces a pollinator shift in monkeyflowers.AuthorsBradshaw HD; Schemske DWPublicationNature, 2003, Vol 426, Issue 6963, p176ISSN1476-4687Publication typearticleDOI10.1038/nature02106