Ancestral Expression (IMAGE) Yale University Caption This figure shows the experimental restoration of predicted ancestral expression, with skulls from a chicken (left), experimental animal (middle), and alligator (right). Credit Bhart-Anjan S. Bhullar Usage Restrictions None 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.