Figure 2From: Evolution and distribution of RNA polymerase II regulatory sites from RNA polymerase III dependant mobile Alu elementsDistribution of regulatory sites in various Alu subfamilies as well as polymorphic Alus. On the X-axis Alus of different evolutionary ages as well as polymorphic Alus (POLY) are represented. On the Y-axis the percentage of elements carrying these sites in various subfamilies is indicated.Back to article page