title: What Is the Tree of Life?
abstract: A universal Tree of Life (TOL) has long been a goal of molecular phylogeneticists, but reticulation at the level of genes and possibly at the levels of cells and species renders any simple interpretation of such a TOL, especially as applied to prokaryotes, problematic.
authors.affiliation: Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada.
authors.forename: W Ford
authors.initials: WF
authors.lastname: Doolittle
authors.affiliation: Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada.
authors.forename: Tyler D P
authors.initials: TD
authors.lastname: Brunet
mesh_terms: D019143:Evolution, Molecular; D008957:Models, Genetic; D010802:Phylogeny