What if scientists not only discovered the gene that causes homosexuality but found a way to change it before the baby was ever born? Dr. Clark penrose does just that and his discovery sets off an international firestorm...What if scientists not only discovered the gene that causes homosexuality but found a way to change it before the baby was ever born? Dr. Clark penrose does just that and his discovery sets off an international firestorm. A gay rights organization quickly files a lawsuit to stop him and they're joined by an evangelical group that believes no one should be allowed to play god.