Mouse (IMAGE) University of Adelaide Caption This is a mouse from associate professor Paul Thomas' lab. Associate professor Thomas and his colleagues have generated male mice with two X chromosomes by artificially activating the SOX3 gene in the developing gonads. Credit Photo by Sandra Piltz Usage Restrictions This image is copyright to the University of Adelaide and is only to be used in conjunction with the story 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.