Vertebrate GC3 vs. GC3-pressures derived from motif preferences.

<p>The correlation between coding-region GC content (GC123) and the corresponding GCvsAT pressure derived from motif preferences. Clockwise from the top left are results for opossum and <i>Rattus</i> (+), platypus, <i>Gallus</i> and <i>Xenopus</i> (+), and <i>Fugu</i> and <i>Danio</i> (+). The thick gray lines are for human genes. See also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0002145#s2" target="_blank">Methods</a> and the previous figure.