William McGinnis (IMAGE) University of California - San Diego Caption UC San Diego biologist William McGinnis. Credit UC San Diego Usage Restrictions Must be used in conjunction with Science Advances paper on fruit fly Hox genes. License Original 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.