Arabidopsis seedlings (IMAGE) Purdue University Caption Arabidopsis seedlings being cultivated for research to study the effects of specific genes on traits such as rate of growth and plant size. Credit Purdue Agricultural Communications/Tom Campbell Usage Restrictions News organizations may use this image in reports about the work of Purdue University’s Kranthi Varala and his colleagues. 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.