Taxon sampling and the accuracy of large phylogenies.
نویسندگان
چکیده
Department of Ecology and Evolution, State University of New York, Stony Brook, NY 11794-5245 , USA; E-mail: [email protected] Department of Biology, University of Rochester, Rochester, NY 14627-0211 , USA Department of Biology, Galton Laboratory, University College London, 4 Stephenson Way, London NW1 2HE, England Department of Integrative Biology, University of California, Berkeley, California 94720-3140 , USA
منابع مشابه
Understanding the Importance of Taxonomic Sampling for Large-scale Phylogenetic Analyses by Simulating Evolutionary Processes under Complex Models
Appropriate and extensive taxon sampling is one of the most important determinants of accurate phylogenetic estimation. In addition, accuracy of inferences about evolutionary processes obtained from phylogenetic analyses is improved significantly by thorough taxon sampling efforts. Much of the previous work examining the impact of taxon sampling on phylogenetic accuracy has focused on the effec...
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Large-scale phylogenies provide a valuable source to study background diversification rates and investigate if the rates have changed over time. Unfortunately most large-scale, dated phylogenies are sparsely sampled (fewer than 5% of the described species) and taxon sampling is not uniform. Instead, taxa are frequently sampled to obtain at least one representative per subgroup (e.g. family) and...
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BACKGROUND Phylogenies are essential to many areas of biology, but phylogenetic methods may give incorrect estimates under some conditions. A potentially common scenario of this type is when few taxa are sampled and terminal branches for the sampled taxa are relatively long. However, the best solution in such cases (i.e., sampling more taxa versus more characters) has been highly controversial....
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The relative contribution of taxon number and gene number to accuracy in phylogenetic inference is a major issue in phylogenetics and of central importance to the choice of experimental strategies for the successful reconstruction of a broad sketch of the tree of life. Maximization of the number of taxa sampled is the strategy favored by most phylogeneticists, although its necessity remains the...
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The effect of taxonomic sampling on phylogenetic accuracy under parsimony is examined by simulating nucleotide sequence evolution. Random error is minimized by using very large numbers of simulated characters. This allows estimation of the consistency behavior of parsimony, even for trees with up to 100 taxa. Data were simulated on 8 distinct 100-taxon model trees and analyzed as stratified sub...
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عنوان ژورنال:
- Systematic biology
دوره 47 4 شماره
صفحات -
تاریخ انتشار 1998