Princeton Researchers Show How Junk DNA Activates Genes (1 of 2) (video) Princeton University Share Print E-Mail Loading video... Caption Using an imaging technique developed at Princeton, researchers captured the moment when a segment of DNA -- from genetic material that was once thought to be useless junk -- turns on a target gene. The video shows the DNA segment, known as an enhancer (blue), as it approaches the gene (green) and activates it (red). The study reveals that close proximity between the enhancer and the gene is necessary to kickstart the activity of the gene. Credit Hongtao Chen, Princeton University Usage Restrictions Editorial use only Share Print E-Mail 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.