K/Kis directly correlated with codon bias, here measured using the ENC' statistic (49; lower ENC' prime values indicate higher codon bias) in () , () , and ()
<p><b>Copyright information:</b></p><p>Taken from "Positive selection for unpreferred codon usage in eukaryotic genomes"</p><p>http://www.biomedcentral.com/1471-2148/7/119</p><p>BMC Evolutionary Biology 2007;7():119-119.</p><p>Published online 18 Jul 2007</p><p>PMCID:PMC1936986.</p><p></p> Error bars indicate standard error. This relationship suggests that recent selective pressures on codon usage in these groups generally reinforce historic selective pressures
