Based on the Saguenay Genealogical Database, various sets of maps were drawn in order to bring out models or structures of genes distribution across the Saguenay territory. From a genetic epidemiology standpoint, this research had a very practical interest in that it was aimed at validating spatial data as potentially useful risk indicators for the prevention of recessive genetic disorders in this particular population. The answer seems to be negative. With a few exceptions, the mutant genes causing the disease do not show patterns of distribution sharp enough to allow a quite safe prediction of genetic phenomena. This finding is somewhat surprising since a set of indices — like the distribution of endogamy, consanguinity, kinship, etc. — suggest the existence of some spatial genes clustering.