Figure 12From: Characterization and modeling of the Haemophilus influenzae core and supragenomes based on the complete genomic sequences of Rd and 12 clinical nontypeable strainsCodon usage of genes is quantified by a normalized epsilon score [26]. Low epsilon scores indicate that a gene's codon usage is similar to the typical H. influenzae codon usage pattern. The range of epsilon scores is similar for all three classes of genes: unique, distributed and core. However, the median scores are significantly different among the classes. The observation that the distributions for non-core genes overlap with the core genes suggests that many of the non-core genes have been evolving in the same pool with the core genes.Back to article page