The relation between genetics and psychoanalysis is a theoretical and practical field of recent existence. In this context Mayana Zatz and Jorge Forbes’ work on Clinical Psychoanalysis at the Human Genome and Stem-Cell Research Center at the University of Sao Paulo, occupies a prominent place. These researchers’ findings have been registered in two must read reference books: GenEthics, by Mayana Zatz (Globo publishers, 2011) and Unconsciousness and Responsibility: Psychoanalysis of the XXI Century (Manole Publishers, 2012). The present article is based on passages from both books, including relevant material obtained during interviews carried out in 2014 in Sao Paulo by Patricia Gorocito. Four cases are presented which examines the subject of paternity and the right of the consultees to “not know” It also delves into the analytical principles, based on Jacques Lacan’s thinking with which this complex set of problems is approached. Translations and establishment of the text by Juan Jorge Michel Fariña.
[marron]Keywords:[/marron] Identity, Genetics, Informed Consent, Responsability