Drosophila (IMAGE) University of California - San Diego Caption On the verge: Drosophila yakuba sometimes lays eggs that have already hatched. Its genome may help to reveal how animals make the switch to live birth. Credit Drosophila Species Stock Center. 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.