Fruit Fly Oocytes (IMAGE) Stowers Institute for Medical Research Caption The top image shows fruit fly oocytes with fully functional Mtrm protein produce fully formed spindles. The bottom image shows that without functional Mtrm protein, oocytes suffer catastrophic destruction of chromosomes and other structures required for cell division. DNA is shown in blue, the meiotic spindle in red. Credit Courtesy of Amanda Bonner, Stowers Institute for Medical Research 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.