Simplified evolutionary trees showing the phylogenetic relationships of the species addressed in this study

<p><b>Copyright information:</b></p><p>Taken from "The nuclear OXPHOS genes in insecta: a common evolutionary origin, a common cis-regulatory motif, a common destiny for gene duplicates"</p><p>http://www.biomedcentral.com/1471-2148/7/215</p><p>BMC Evolutionary Biology 2007;7():215-215.</p><p>Published online 8 Nov 2007</p><p>PMCID:PMC2241641.</p><p></p> Abbreviations used in the text are in parentheses. (A) Evolutionary relationships of the Drosophilidae species studied. Tree structure and estimated divergence times are from Russo and Takezaki [14]. (B) Simplified insect evolutionary tree. In accord with recent works [17,18] the Hymenoptera are basal to the Coleoptera in the Endopterygota. (C) Global evolutionary tree showing the early divergence of cnidarians and Bilateria