![George Washington University research assistant Chris Day positions a needle to inject CRISPR Cas9 and guide RNA into butterfly eggs.](https://will.illinois.edu/images/uploads/51501/101218-am-crispr_chrisday__medium.jpg)
A Hands-On Look At Gene-Editing Technique CRISPR, Possible Ag Game-Changer
In a lab at George Washington University, painted lady butterflies flutter in mesh houses. This is where assistant professor Arnault Martin and his research group use the new gene-editing technique CRISPR to unlock secrets about the colors and spots on the butterflies’ wings.