This book addresses boundary issues of medical practice in the field of prenatal diagnostics. Ethical problems arise, among other things, when embryonic life is threatened. Can abortions, especially late-term abortions, and the selection and termination of human embryos through preimplantation diagnostics be ethically justified? How should age-related amniocentesis be assessed? Should embryos be selectable based on their gender or as future tissue donors for sick siblings? The focus of the discussion is the human embryo and the question of its moral status. Does it possess dignity and life protection from the very beginning, or can it be treated arbitrarily? The reproductive autonomy and responsibility of the woman are discussed in a balanced manner, along with her special position as an expectant mother.