Deletion of Wt1 gene (IMAGE) University of Barcelona Caption The study states that the Wt1 gene is necessary for activating the pathways that determine the development of the male and female sex. Credit UNIVERSITY OF BARCELONA Usage Restrictions Credit must be given to the creator. License CC BY 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.