title: Pulling together or pulling apart: hybridization in theory and practice.
authors: Department of Animal and Plant Sciences, The University of Sheffield, Sheffield, UK. r.k.butlin@sheffield.ac.uk
authors: R K
authors: RK
authors: Butlin
authors: M G
authors: MG
authors: Ritchie
mesh_terms: D000818:Animals; D049810:Genetic Speciation; D006824:Hybridization, Genetic