Genetics in the United States: Start-ups Selling Custom Babies

American start-ups are allowing prospective parents to select embryos based on genetic profiles, including health, height, and intellectual potential. This practice, which attracts investors from Silicon Valley, raises ethical concerns, especially since it is prohibited in France except for medical reasons. Laboratories like Herasight in North Carolina analyze the DNA of embryos to establish a polygenic score, enabling parents to choose the embryo deemed most promising.