Image (IMAGE) Heidelberg University Caption Artistic rendering of the genomic bases of organ evolution. The figure shows a DNA double helix with pictograms of mammals and selected organs. Credit Copyright: Henrik Kaessmann (artist: Andre Provedel) Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.