par Milinkovitch, Michel 
;Lyons-Weiler, James
Référence Molecular phylogenetics and evolution, 9, 3, page (348-357)
Publication Publié, 1998-06
;Lyons-Weiler, JamesRéférence Molecular phylogenetics and evolution, 9, 3, page (348-357)
Publication Publié, 1998-06
Article révisé par les pairs
| Résumé : | Considerable confusion remains among theoreticians and practicioners of phylogenetic science on the use of outgroup taxa. Here, we show that, despite claims to the contrary, details of the optimal ingroup topology can be changed by switching outgroup taxa. This has serious implications for phylogenetic accuracy. We delineate between the process of outgroup selection and the various possible processes involved in using an outgroup taxon after one has been selected. Criteria are needed for the determination that particular outgroup taxa do not reduce the accuracy of evolutionary tree topologies and inferred character state transformations. We compare previous results from a sensitivity bootstrap analysis of the mitochondrial cytochromebphylogenetic relationships among whales to the results of a Bremer support sensitivity analysis and of a recently developed application of RASA theory to the question of putative outgroup taxon plesiomorphy content. © 1998 Academic Press. |
