Daywake (IMAGE) Rutgers University Caption On cold days, the 'daywake' gene activates to suppress Drosophila flies' tendency to take a midday nap -- presumably so they can spend more time seeking food or mates. Credit Isaac Edery, Rutgers University's Center for Advanced Biotechnology and Medicine 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.