Levi Morran, University of Oregon (IMAGE) University of Oregon Caption Levi T. Morran, a doctoral student at the University of Oregon, led study that found sex with a male mate is better than "selfing." Credit University of Oregon 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.