Jean-Christophe Billeter (IMAGE) University of Groningen Caption This is Jean-Christophe Billeter, associate professor of Neurogenetics of Social and Sexual Behaviour at the University of Groningen and senior author of the paper in Nature Ecology & Evolution Credit University of Groningen Usage Restrictions With credit 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.