Genetics fascinates us with the progress it makes possible and promises for the future, but it also inspires defiance in how it objectifies human beings. For it raises considerable ethical issues: commercialization of the human genome, cloning, medically-assisted reproduction... In an age when some idolize its powers and others live in ignorance of them, it is hard to have a calm and reasonable opinion. These 100 keywords are already a big step toward making sense of genetics: this book's humble ambition is to help readers take that step.