Graph (IMAGE) Florida State University Caption The FSU researchers' new model allows for increased variation in simulations designed to identify the origins of genetic differences. The graph shows the many different environments that can change the potential of an ancestor to produce offspring. Credit Beerli 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.