One Promiscuous Salamander (IMAGE) University of Iowa Caption The all-female hybrid Ambystoma has found a simple genetic formula for success: Mate with multiple males and use equal parts of each partner's genetic material in her offspring. The finding points to the bizarre ways some animals -- from all-female populations of fish, lizards, and others -- can use their genomes to maximize their chances of success. Credit Robert Denton, Ohio State University 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.