Added: Carime Bunger - Date: 23.09.2021 10:50 - Views: 37341 - Clicks: 4441
Our analyses showed generally little impact of missing data on dating with BEAST, with errors typically less than 5 Myr. In contrast, reducing the of fossil calibrations led to dramatic errors in estimated dates.
Time-calibrated phylogenies have become essential to evolutionary biology. A recurrent and unresolved question for dating analyses is whether genes with missing data cells should be included or excluded.
This issue is particularly unclear for the most widely used dating method, the uncorrelated lognormal approach implemented in BEAST. Here, we test the robustness of this method to missing data.
We compare divergence-time estimates from a nearly complete dataset 20 nuclear genes for 32 species of squamate reptiles to those from subsampled matrices, including those with 5 or 2 complete loci only and those with 5 or 8 incomplete loci added. Overall, missing data and even s of genes sampled may have only minor impacts on the accuracy of divergence dating with BEAST, relative to the dramatic effects of fossil calibrations.
Download : Download full-size image. View PDF. Access through your institution Purchase PDF. Author links open overlay panel Yuchi Zheng a b John J. Wiens b. Add to Mendeley Share. Abstract Time-calibrated phylogenies have become essential to evolutionary biology.
Graphical abstract Download : Download full-size image. Keywords Accuracy. Recommended articles Citing articles 0.
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Do missing data influence the accuracy of divergence-time estimation with BEAST?