Abdomen of flies (IMAGE) University of Bonn Caption The images show the abdomen of flies in which a specific enhancer region has been modified. Depending on how much and which part of the region is modified, different areas of the pigment pattern change. This shows that the region contains several non-modular enhancers (blue = strong gene expression; red = weak gene expression). Credit Mariam Museridze / Universität Bonn Usage Restrictions The image may be used in combination with the press release. 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.