Joan Ferrer

After a brief overview of the scientific data on cloning, the article examines the ethical issues put forth by this particular form of reproduction. A distinction is made between the application of cloning to the animal and vegetable realms and to the human species. The cloning of plants and animals is ethically permissible if it guarantees the preservation of species and of genetic diversity within the species. Humankind is not entitled to an absolute and irresponsible dominion -ius utendi et abutendi - over the world. As the Yahwist has taught us, the human person has been placed in the middle of the garden as its guardian and caretaker . On the other hand, the prudent use of vegetable and animal cloning can render a great service to humankind both in agriculture and in medicine. When it comes to the application of cloning to the human species, the article introduces a distinction between the «procreation» of human beings through these techniques and the reproduction of human cells for therapeutic uses. The author concludes that the production of human persons through the application of cloning techniques is morally unacceptable. The ethical objections are presented under three major headings: 1) the respect due to the human embryo; 2) the dignity of the human person ; and 3) the authentic meaning of human procreation as a fully human activity. The values at stake in the cloning of human beings are among the most basic values for th