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• W2118183723 abstract "The placement of the root node in a phylogeny is fundamental to characterizing evolutionary relationships. The root node of bee phylogeny remains unclear despite considerable previous attention. In order to test alternative hypotheses for the location of the root node in bees, we used the F1 and F2 paralogs of elongation factor 1-alpha (EF-1α) to compare the tree topologies that result when using outgroup versus paralogous rooting. Fifty-two taxa representing each of the seven bee families were sequenced for both copies of EF-1α. Two datasets were analyzed. In the first (the “concatenated” dataset), the F1 and F2 copies for each species were concatenated and the tree was rooted using appropriate outgroups (sphecid and crabronid wasps). In the second dataset (the “duplicated” dataset), the F1 and F2 copies were aligned to each another and each copy for all taxa were treated as separate terminals. In this dataset, the root was placed between the F1 and F2 copies (e.g., paralog rooting). Bayesian analyses demonstrate that the outgroup rooting approach outperforms paralog rooting, recovering deeper clades and showing stronger support for groups well established by both morphological and other molecular data. Sequence characteristics of the two copies were compared at the amino acid level, but little evidence was found to suggest that one copy is more functionally conserved. Although neither approach yields an unambiguous root to the tree, both approaches strongly indicate that the root of bee phylogeny does not fall near Colletidae, as has been previously proposed. We discuss paralog rooting as a general strategy and why this approach performs relatively poorly with our particular dataset." @default.
• W2118183723 created "2016-06-24" @default.
• W2118183723 creator A5003208785 @default.
• W2118183723 creator A5062677389 @default.
• W2118183723 creator A5089700587 @default.
• W2118183723 date "2011-09-01" @default.
• W2118183723 modified "2023-10-18" @default.
• W2118183723 title "Rooting phylogenies using gene duplications: An empirical example from the bees (Apoidea)" @default.
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• W2118183723 doi "https://doi.org/10.1016/j.ympev.2011.05.002" @default.
• W2118183723 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21600997" @default.
• W2118183723 hasPublicationYear "2011" @default.
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