Fruit Flies (IMAGE) University of Münster Caption Fruit flies (shown here mating) served as the study model. Credit Mareike Kopping Usage Restrictions The use of this image is only permitted in connection with this press release and with indication of the source. 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.