Relationships among three measures of sequence divergence. Bacteria constituting each genome-pair were classified according to their type of association with eukaryotic hosts. (A) Relationship between genome-wide nonsynonymous (Ka) and synonymous (Ks) site divergence. (B) Relationship between 16S rRNA divergence (K16S) and genome-wide Ks. (C) Relationship between genome-wide Ka and K16S.
Kuo and Ochman Biology Direct 2009 4:35 doi:10.1186/1745-6150-4-35