Est Set-Up of the Selection Experiment (image) University of Zurich Caption Different genotypes of Arabidopsis thaliana were exposed to different aphids in parallel. Each individual Plexiglas box simulates a plant population with a particular composition of aphids. Credit picture: UZH Usage Restrictions None 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.