<em>C. elegans</em> Embryos (IMAGE) University of California - Santa Cruz Caption In these C. elegans embryos, only chromosomes inherited from the egg are stained green. All chromosomes are stained red for DNA. By distinguishing between egg- and sperm-inherited chromosomes, researchers were able to track the effects of epigenetic marks carried by the sperm chromosomes. Credit K. Kaneshiro Usage Restrictions For use only with news coverage of this research. 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.