TABLE-S1.xlsx - This table is essentially the same as Table 2 (see Table 2 legend for descriptions of columns) however, subcollumns have been added to indicate the effect that the inclusion and exclusion of C. elegans sequences have on the analysis.

no_ce.nj.tre - neighbor-joining tree generated with default parameters in Phylip used in paralog and branch length analysis.  This tree was generated with the alignment included in Additional File 3 except all C. elegans sequences were removed.

