Pollen grains (IMAGE) University of Zurich Caption Matured anthers of Arabidopsis thaliana: Compared to the wild type (left), the rdp1 mutant (right) contains only half of the pollen grains (in magenta). Credit Hiroyuki Kakui 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.