FIG. 1.

Compatibility matrices for nucleotide polymorphisms within (A) all L. monocytogenes isolates, (B) lineage I isolates only, and (C) lineage II isolates only. Matrices contain all possible pairwise comparisons of binary parsimony informative sites that are phylogenetically compatible (white cells) or incompatible (black cells) within genes (triangular regions) or between genes (rectangular regions). For each gene, values in parentheses are the number of informative sites followed by the observed within-gene compatibility.