Our socio-cultural reality defines gender in two distinct categories, male and female, and this is supposed to be a natural and definitive fact. At the same time, gender%s socio-cultural articulation (social gender) is supposed to be beyond any doubt, unchangeable, and always related to its biological nature (biological gender). However, in this same socio- cultural reality there are also people who do not identify themselves with this discourse and therefore question it. Transsexual and other transgender persons thus in different ways adopt or assert a gender which, within the ideology of gender, should not be available or accessible to them. The article describes the ways of this adoption or assertion and simultaneously addresses the issue of the accessibility of the concepts of male and female gender.