Puzzle Image (IMAGE) Princeton University Caption A study led by Princeton University researchers found that the pond-dwelling, single-celled organism <i>Oxytricha trifallax</i> (above) has the remarkable ability to break its own DNA into nearly a quarter-million pieces and rapidly reassemble those pieces when it's time to mate. This elaborate process could provide a template for understanding how chromosomes in more complex animals such as humans break apart and reassemble, as can happen during the onset of cancer. Credit John Bracht, American University and Robert Hammersmith, Ball State University. 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.