Kory Evans (IMAGE) Rice University Caption Rice University bioscientist Kory Evans with a 3D printed skull of a jack, a close symmetrical relative of flatfish. Evans and colleagues found flatfish rapidly evolved their asymmetric shape thanks to highly integrated networks of genes that controlled the shapes of their skulls. Credit Jeff Fitlow/Rice University Usage Restrictions Must credit: Jeff Fitlow/Rice University 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.