The standard lateral gene transfer model is statistically consistent for pectinate four-taxon trees

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  • Andreas Sand, Denmark
  • Mike Steel, Allan Wilson Centre for Molecular Ecology and Evolution, University of Canterbury, New Zealand
Evolutionary events such as incomplete lineage sorting and lateral gene transfers constitute major problems for inferring species trees from gene trees, as they can sometimes lead to gene trees which conflict with the underlying species tree. One particularly simple and efficient way to infer species trees from gene trees under such conditions is to combine three-taxon analyses for several genes using a majority vote approach. For incomplete lineage sorting this method is known to be statistically consistent; however, for lateral gene transfers it was recently shown that a zone of inconsistency exists for a specific four-taxon tree topology, and it was posed as an open question whether inconsistencies could exist for other four-taxon tree topologies? In this letter we analyze all remaining four-taxon topologies and show that no other inconsistencies exist.
Original languageEnglish
JournalJournal of Theoretical Biology
Volume335
Pages (from-to)295-298
Number of pages4
ISSN0022-5193
DOIs
Publication statusPublished - 1 Oct 2013

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