Male and Female Liverworts (IMAGE) University of Tokyo Caption Healthy female (left) and male (right) Marchantia polymorpha liverworts develop distinctive umbrella-shaped structures when they are ready to reproduce. Researchers at the University of Tokyo and their colleagues around Japan investigated the genetic mechanisms controlling the switch from growth to reproduction. Credit Image by University of Tokyo, CC-BY-SA 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.