Contact: Mari N. Jensen
University of Arizona
Caption: The colonial alga Volvox tertius has about 2,000 cells and a complete division of labor: cells either swim or reproduce, but not both. The few large cells within these colonies are the reproductive cells, while the many tiny cells do the swimming.
Credit: Copyright 2009 Matthew Herron.
Usage Restrictions: This photo may only be used to illustrate a story about the research described in the accompanying news release,
Related news release: How Volvox got its groove