Quartet Mapping and the Extent of Lateral Transfer in Bacterial Genomes

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Abstract

Several recent analyses have used quartet-based methods to assess the congruence among phylogenies derived for large sets of genes from prokaryotic genomes. The principal conclusion from these studies is that lateral gene transfer (LGT) has blurred prokaryotic phylogenies to such a degree that the darwinian scheme of treelike evolution might be abandoned in favor of a net or web. Here, we focus on one of these methods, quartet mapping, and show that its application can lead to overestimation of the extent of inferred LGT in prokaryotes, particularly when applied to distantly related taxa.

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Daubin, V., & Ochman, H. (2004). Quartet Mapping and the Extent of Lateral Transfer in Bacterial Genomes. Molecular Biology and Evolution, 21(1), 86–89. https://doi.org/10.1093/molbev/msg234

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