Patent ID: 7006924

Claim:
A system for searching for relationships between base sequences in genes, comprising: an amplified sequence recognizing portion; a theoretical value calculating portion; a comparing portion; and a displaying portion; wherein said amplified sequence recognizing portion reads pre-amplification base sequence data of known genes, and produces, based on primer data including name, identification number, and recognition site data of the primers used for amplifying base sequences, and allowance limit for mismatch of predetermined forward and reverse primer; post-amplification base sequence data, wherein said post-amplification base sequence data comprises one or more of names of the primers, identification numbers of the primers, DNA number, group of the base sequences, name of organisms, and name of the known gene; wherein said theoretical value calculation portion calculates, based on input data stored in a restriction enzyme database, theoretical restriction fragment length values of the known genes digested by restriction enzymes, and the post-amplification base sequence data, and outputs theoretical restriction fragment pattern data, wherein said input data comprises sequence of the known genes, restriction enzyme data comprising a set of the name and identification number of restriction enzymes, recognition sites recognized by the restriction enzymes, and restriction sites at which the restriction enzymes cut in the recognition sites, wherein said theoretical restriction fragment pattern data comprises at least said post-amplification base sequence data, said theoretical restriction fragment length values, and numerical value which is 1 for theoretical data, or 2 for measured data; wherein said comparing portion compares the theoretical restriction fragment pattern data with measured restriction fragment pattern data, calculates the degree of similarity of the known genes to the sample, and outputs said degree of similarity to said displaying portion, wherein said measured restriction fragment pattern data comprises a name or identification number of the restriction enzymes, measured restriction fragment length values obtained as a result of digesting a sample with the restriction enzymes followed by measurement and at least one name or identification number of the primers; wherein said displaying portion diagrammatically displays samples having a similarity therebetween based on the calculation of the degree of similarity, or displays a set of a known gene and a sample having similarity therebetween based on the calculation of the degree of similarity.