The model predicts similar adjustment in parameters consistent to the phylogenetic relationship of species.

<p>Experimental quantification of the Dl gradient (solid line) and model simulations (dotted lines). Shadowed area indicates mean±SD A–D) <i>D. melanogaster</i> (A, adjusted parameters shown in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003807#pcbi-1003807-t001" target="_blank">Table 1</a>); and species gradient simulations according to <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003807#pcbi-1003807-t002" target="_blank">Table 2</a> (B, <i>busckii;</i> C, <i>simulans</i>; D, <i>sechellia</i>). Experimental data was obtained from <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003807#pcbi.1003807-Chahda1" target="_blank">[8]</a>. <b>V</b> indicates ventral midline, <i>y</i> axis indicate normalized Dl levels, <i>x</i> axis indicate nuclei. See <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003807#pcbi.1003807.s016" target="_blank">Table S5</a> for fit calculations.