Meiosis and spermiogenesis (IMAGE) Kumamoto University Caption Meiosis is initiated by MEIOSIN, but the details of the mechanism for completing the meiotic phase by inactivating meiosis-related genes at the appropriate time were unknown. Credit Dr. Yuki Takada & Prof. Kei-ichiro Ishiguro Usage Restrictions To use this media elsewhere, the authors request a reference this release be included. License Original 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.