To Study Bacterial Evolution (IMAGE) Indiana University Caption IU biologists, from left, Jake McKinlay, Michael Lynch, Jay T. Lennon and Patricia Foster want to know how bacterial populations evolve in response to selective changes like population, food availability and relationships with other species. Credit Indiana University Usage Restrictions None License Licensed 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.