The completion of mapping the human genome has significant implications for humanity, particularly in the realm of genetic engineering and embryo selection. Current practices already allow for genetic screening before birth, enabling parents to avoid passing on highly heritable diseases. This technology has been utilized in specific cases, such as selecting embryos that can serve as bone marrow donors for siblings. With the entire genome sequence available, identifying disease-causing genes will become more efficient, leading to broader embryo screening options. While government regulations prohibit screening for non-medical traits like eye color, the private sector may have the ability to pursue such practices, raising ethical questions about the future of genetic selection.