William Muir, Purdue University (IMAGE) Purdue University Caption All plants and animals compete for limited resources such as food, mates, sun and territory. William Muir, a Purdue geneticist, has found a quantitative method of determining inherited traits that affect social inactions. Using this information can help breed for less aggressive animals that will be more productive. Muir is shown with Shamu, a domesticated tilapia. Credit Purdue Agricultural Communication photo/Tom Campbell 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.