Arabidopsis (IMAGE) University of California - Davis Caption Studying the genome of thale cress, a small flowering weed, led to a new understanding about DNA mutations. (Pádraic Flood) Credit Pádraic Flood Usage Restrictions Please credit: Pádraic Flood 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.