A Changing Choanoflagellate (image) University of Oregon Share Print E-Mail Caption The top image is a fluorescence micrograph of a dividing solitary choanoflagellate showing its DNA (blue) and flagella and mitotic spindle (green). A small choanoflagellate colony is shown below, with one of its cells dividing. Research from the Prehoda lab at the University of Oregon indicates that the connection between the flagella and division orientation may have been important for the evolution of organized multicellularity in animals. Credit Arielle Woznica, UC Berkeley 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.