The document discusses the topic of designer babies. It begins by defining genetic disorders like cystic fibrosis and down syndrome. It then explains principles of heredity, such as how traits are determined by genes from each parent. The document also discusses the human genome project and its goal to understand the genetic basis of disease. It presents arguments for and against designer babies, debating whether altering embryos is ethical or interferes with nature. In the end, the document concludes that designer babies are irrational and the procedure should not happen.