This document discusses designer babies and arguments against them. It begins with background on genetics and the Human Genome Project. It then outlines four main arguments against designer babies: 1) they do not use the parents' genes and could have unknown health risks, 2) parents may want a "perfect" child and reject one with problems, 3) it could lead to attempts to make all people the same and eliminate diversity, 4) it is unethical and goes against nature. The conclusion is that designer babies are not ethical and could have unknown issues later in life.