<p>The boxplots show the distribution of the calculated correlation values (between the observed and expected distribution of alternative TISs) (<i>Y</i> axis) for: (A) all bacterial and archaeal RefSeq genomes grouped by year of sequencing (NCBI Bioproject data; [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0133691#pone.0133691.ref038" target="_blank">38</a>]); (B) The RefSeq genomes grouped into 6 bins according to their GC%; (C) The RefSeq genomes grouped according to phylum; and (D) 277 selected bacterial and archaeal genomes with varying SD-index (proportion of Shine-Dalgarno sequence-preceded genes) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0133691#pone.0133691.ref004" target="_blank">4</a>].</p
