Ancient intron insertion sites and palindromic genomic duplication evolutionally shapes an elementally functioning membrane protein family-4

<p><b>Copyright information:</b></p><p>Taken from "Ancient intron insertion sites and palindromic genomic duplication evolutionally shapes an elementally functioning membrane protein family"</p><p>http://www.biomedcentral.com/1471-2148/7/143</p><p>BMC Evolutionary Biology 2007;7():143-143.</p><p>Published online 20 Aug 2007</p><p>PMCID:PMC1999503.</p><p></p>d IRK groups, respectively. Anamniotic vertebrates mean fish and amphibians, and amniotic birds and mammals. Abscissa, Intron numbers. Ordinate, Number of genes, which showed numbers of intron insertions in the coding regions as indicated on the abscissa. Figure is the similar histogram for IRK genes of protostomic clade, that is, and , and and