Gunter Wagner, Yale University (IMAGE) Yale University Caption "It appears that tuning up a complex trait in a living organism is well coordinated and the effects of pleiotropy are more focused than we thought," said Gunter Wagner. Credit Yale Usage Restrictions With credit given 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.