Sequence divergences for shared orthologs detected within each genome pair.

Values are not directly comparable among genome pairs, since they are based on different sets of genes. Dr and Dc values presented here were estimated under the classification scheme of Miyata et al. [54]. Pre-filter values (columns 2–4) include all orthologs identified within each genome pair. Filtered data (columns 5–15) excludes orthologs for which Dr/Dc estimates are considered unreliable under the “high s.e. filter” (see text), typically due to zero or very few amino acid substitutions.