ABSTRACT
The considerable improvements achieved in mapping the human genome should not give rise to false ideas: today’s medical genetics still remains a medicine in its infancy. This medicine is neither curative nor palliative because it does not have any therapeutic tool. It is not a preventive medicine either because the occurrence of a genetic accident is a completely unpredictable event. The improvements achieved in the knowledge of the human genome make it a descriptive medicine. Its single objective is to recognise and identify the accident, and then to avoid the worst, which is its reoccurence.
