Abstract

Until the 19th and 20th century, philosophers, theologians, and lawmakers were uncertain at exactly which moment an embryo was to be fully considered a human individual. The modern natural scientists have made clear that an embryo is an individual human being as soon as the egg and the sperm cell have fused. Taking this into account the article discusses current problems of dealing with embryos. It focuses on the ethical problems created by pre-implantation diagnosis and human germline engineering. The author believes that under certain conditions it is ethically justifiable to use preimplantation diagnosis with embryos