title: The medicolegal usefulness of the Kidd system in exclusion of parentage.
abstract: The blood samples of 2741 people from Germany were examined. The gene frequencies of Jka was found  to be 0.49345 and of Jkb 0.50655. The theoretical probability of exclusion lies at 18,57%, the practical one only at 7.09%, because in many cases, the presumptive father is also the biological father. It is a system of dependable information. The Kidd system can be used as a classical system for exclusion of parentage.
mesh_terms: D001789:Blood Group Antigens; D002648:Child; D005260:Female; D005554:Forensic Medicine; D005787:Gene Frequency; D005860:Germany, West; D006801:Humans; D007667:Kidd Blood-Group System; D008297:Male; D010334:Paternity; D010641:Phenotype
chemical_list: D001789:Blood Group Antigens; D007667:Kidd Blood-Group System