Role of gene duplication and horizontal gene transfer (HGT) in rhodococcal genome evolution.

<p>Scatter plots of (A) duplicated (paralogous) genes and (B) HGT genes versus the total number of genes in rhodococcal and actinobacterial genomes (curve fits of rhodococcal data in red, general trendline in black). HGT genes were excluded from the paralogy analyses.</p>