FIG 2.

Concordance between host and E. coli phylogenetic trees. (A) Phylogenetic tree of the whole-genome sequencing of E. coli strains and the tree of life (TOL) for host strains. For host species for which more than one isolate were available in the data set, one strain was randomly drawn. Clades for bird and major mammalian orders are highlighted. (B) The frequency (y axis) of path tree differences relative to the E. coli tree (x axis) for 1,000 random shuffling of tree tips of the host tree in panel A (black bars), contrasted to the observed value from unpermuted data (red dashed line).