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

JOURNAL OF THEORETICAL BIOLOGY

卷:335

Article

Sand, Andreas^1,2  Steel, Mike³ 

[1] Aarhus Univ, Bioinformat Res Ctr, Aarhus, Denmark

[2] Aarhus Univ, Dept Comp Sci, DK-8000 Aarhus, Denmark

[3] Univ Canterbury, Allan Wilson Ctr Mol Ecol & Evolut, Christchurch 1, New Zealand

关键词: Phylogenetic trees;    Lateral gene transfer;    Statistical consistency;   

DOI  :  10.1016/j.jtbi.2013.07.002

来源: Elsevier

【 摘 要 】

Evolutionary events such as incomplete lineage sorting and lateral gene transfers constitute major problems for inferring species trees from gene trees, as they 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. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free