HomeR engineered flies (image) University of California - San Diego Share Print E-Mail Caption Engineered flies expressing Cas9 (red body) and the Home-and-Rescue (HomeR) drive system (green eyes), which is designed to more safely and stably implement genetic modifications in target populations. Credit Nikolay Kandul, UC San Diego Usage Restrictions Must be used in conjunction with UC San Diego research on gene drives. 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.