[Biotechnology and society in the new century]

The developments and applications in human biotechnology make us face deep social dilemmas, social and ethical, that are associated to the possibility of altering our evolutionary and cultural development, thereby renouncing to the principle of Humanity. From a sociological perspective, this text reflects on this matters taking into account how its past and present has shaped a specific operational matrix that is projected towards the future. We shall offer all the public perceptions held on their possibilities in Spain and in the European nations as every advance in scientific and technological matters must take into account the opinion of the citizenry. Finally, there are some final reflections that rather than close the debate leave some questions unanswered. The future should be constructed through dialogue and consensus in a matter of such importance.