Gene tree support and concordance factors for three concurrent species trees.

“Strep core” refers to the core genome of the genus Streptococcus based on the species included in Table 1. “4 sp core” refers to the core genome based on a consideration of only the 4 species involved in these three topologies. The ‘Gene tree’ column refers to the number of gene trees displaying the specified topology, while the ‘Bootstrap’ column presents the number of genes supporting this bipartition with a bootstrap score greater than 90%. The last column includes the concordance factors with 95% confidence intervals in parentheses.