Additional File 7.
Branch length correlations among data types for each vertebrate clade. For each clade, all branches shared between a pair of trees (combined + mtDNA, combined + nucDNA, mtDNA + nucDNA) were tested for correlation. Nearly all comparisons show significant positive correlations in all possible combinations between the lengths of shared branches among trees. The two clades that do not show significant correlations in all combinations (dicaeid birds and cervid mammals) have very small sample sizes of shared branches, making detection of significant patterns difficult.
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Fisher-Reid and Wiens BMC Evolutionary Biology 2011 11:300 doi:10.1186/1471-2148-11-300