Menetelmä geenipaikannukseen kromosomi- ja fenotyyppidatasta

The present invention relates to a method for gene mapping from chromosome and phenotype data, which utilizes linkage disequilibrium between genetic markers mi, which are polymorphic nucleic acid or protein sequences or strings of single-nucleotide polymorphisms deriving from a chromosomal region. The method according to the invention is based on discovering and assessing tree-like patterns in genetic marker data. It extracts, essentially in the form of substrings and prefix trees, information about the historical recombinations in the population. This infor-mation is used to locate fragments potentially inherited from a common diseased founder, and to map the disease gene into the most likely such fragment. The method measures for each chromosomal location the disequilibrium of the prefix tree of marker strings starting from the location, to assess the distribution of disease-associated chromosomes.