In the book "My Sister's Keeper" by Jodi Picoult, Anna Fitzgerald was conceived with a purpose. Scientists helped Anna's parents conceive her because she would be a perfect bone marrow match for her sister Kate, who has leukemia. At a young age, Anna was aware of her role. Anna says, “You see, unlike the rest of the free world, I didn't get here by accident. And if your parents have you for a reason, then that reason better exist. Because once he's gone, so are you” (Picoult). Genetically modifying one child to benefit another, as in “My Sister's Keeper,” can produce good results for the affected child but bad results for the other. This happens when the attempt to keep the sick child healthy conflicts with the interests of the healthy child. With scientific advances, this type of breeding for one purpose could become a serious problem in the future. The Catholic Church supports gene therapy for the purpose of saving lives, but does not support genetic enhancement for the purpose of creating a person other than the one God intended (ncregister.com).David Be...