Chromatin rendering (IMAGE) Salk Institute Caption A rendering of chromatin architecture that demonstrates DNA loops. The stretch of DNA (tan) is accented with colored portions of genetic code (green and pink, blue and yellow, light green and purple, and light purple and light blue) that are brought closer together by the formation of loops. Credit Salk Institute Usage Restrictions With credit and related coverage 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.