B chromosomes undergoing elimination (image) Leibniz Institute of Plant Genetics and Crop Plant Research Share Print E-Mail Caption Supernumerary B chromosomes of Ae. speltoides undergoing process elimination. B chromosomes were labelled in yellow, centromeres in purple and tubulin in green. Credit Dr. Alevtina Ruban/ IPK Usage Restrictions None Share Print E-Mail 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.