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An ethical and juridical analysis on the protection of the right of life in Brazil is provided foregrounded on the jurisprudential construction of the Supreme Federal Court, especially on the juridical bases used in decisions following the Unconstitutional Act 3510, Argument of Non-Compliance of the Fundamental Precept n. 54 and of the Habeas Corpus n. 124,306. Qualitative research has been developed through a bibliographical and documental survey in books and scientific articles on the theme and through jurisprudential research. No agreement occurs on the beginning of life and it is important to have a dialogue with advances in biotechnology for the process of the construction of ethical and juridical precepts on the protection of the embryo and human nature, with special reference to human dignity. [ABSTRACT FROM AUTHOR]

This article deals with the existing scientific divergence with regard to the surplus of frozen embryos, especially between biology, religion, the law and bioethics, with a specific focus on the ways in which each of these areas determines the onset of life. The aim of the authors is to suggest alternatives that protect the human, embryo, such as adoption by couples or by single women, who, for medical reasons, are infertile, but are capable of bearing a child. In the case of Brazil, the authors conclude that it is legal and legitimate to donate and adopt human embryos for fertilization, so long as the principle of human dignity is upheld and confidentiality maintained regarding the identity of the donors of the gametes, whose data should remain on file permanently at the center where fertilization occurred. [ABSTRACT FROM AUTHOR]

This paper approaches the complex question of the human embryo, and is situated before one of the most conflicting themes that integrate bioethics became of the insistence of many people on supporting that we are just dealing with an undifferentiated group of cells which can undergo any kind of manipulation or destruction without measuring the consequences, be them moral or juridical. As we recognize the embryo, both in a biological and philosophical sphere, as an individual of the human species since its conception, as well as -- on an ontological level -- human, we recognize the embryo as a subject of rights and bearer of fundamental ones, which bring, first and foremost, its lawful right to life. [ABSTRACT FROM AUTHOR]

The main problem that arises from the application of the assisted fecundation techniques, especially from the FIVET (Fertilization In Vitro with Embryo Transfer) is the supernumerary embryos. Taking into account that they are human beings with a potentiality to become adults, it's important that every legislation must consider the possibility of giving them in adoption to other infertile couple, as it is established in the spanish legislation. [ABSTRACT FROM AUTHOR]