All-scaffold data average source tree FN rate vs. supertree FN rate. Average source tree FN rates against supertree FN rates. Each point represents a single replicate for a single model condition with a 100-taxon model tree and datasets for which all source trees are estimated using scaffold datasets containing four universal genes. The solid line is a a regression line. The dotted line represents supertree constructions that have the same FN as the average source tree given as input. Points above the dotted line correspond to supertrees that are less topologically accurate than the average source tree, while points below the line correspond to supertrees that improved upon the average accuracy of the source trees.