<em>Saccharomyces paradoxus</em> (IMAGE) Norwich BioScience Institutes Caption This is a photo of ascus, a sexual spore-bearing cell, plus ascospores of the yeast Saccharomyces paradoxus. Credit Institute of Food Research 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.