Gene Editing Illustration (IMAGE) University of California - San Diego Caption CRISPR/Cas9 is a gene-editing tool that can target a particular segment of DNA in living cells and replace it with a new genetic sequence. Credit Jacobs School of Engineering/UC San Diego Usage Restrictions Please credit Jacobs School of Engineering/UC San Diego 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.