Table 2.

Substitution rates derived from concatenated alignments. Results derived from concatenated alignments from the same datasets as in Table 1 are shown. Sampling error, in parentheses, was estimated using the bootstrap method described in the Implementation section.

Data Set	Codons	Codon identity	K a	K s	Ka/Ks
BES (quality filtered)	19490	0.959	0.012 (0.001)	0.033 (0.002)	0.374 (0.04)
BES (unfiltered)	45702	0.935	0.022 (0.001)	0.046 (0.002)	0.491 (0.02)
Genbank CDSs	26019	0.966	0.009 (0.001)	0.020 (0.001)	0.473 (0.05)
Genbank ESTs	125198	0.958	0.006 (0.0003)	0.026 (0.001)	0.235 (0.01)