Abstract: Provided is a genotyping method. The genotyping method includes using a DNA chip on which just an optimal probe set is immobilized, the optimal probe sets composed of a discriminating probe which perfectly matches a mutant type gene or a wild type gene for each of at least one identified mutation site in each of at least one amplicon contained in a sample and an amplicon probe having a sequence which perfectly matches a region excluding a nucleotide sequence at a mutation site in each amplicon and is absent from the other amplicons, in order to identify which one of a wild type gene and a mutant type gene is present in each mutation site. In this genotyping method, the number of probes used can be reduced and reliability of genotyping results can be increased.

Abstract: A robust genotyping method using a DNA chip is provided. In the DNA chip used in the genotyping method, optimal probe pairs of a wild-perfect match probe and a mutant-perfect match probe are immobilized for each mutation site on a substrate. The method includes setting up a genotyping algorithm using data obtained from hybridization of an identified standard nucleic acid to the DNA chip, and genotyping an unknown target nucleic acid by substituting input vectors that are calculated from hybridization of the target nucleic acid to the DNA chip into the genotyping algorithm. The results of genotyping the target nucleic acid using the optimal probe pairs for each mutation site are statistically robust to errors.

Abstract: The present invention relates to a microarray having probe polynucleotide spots capable of binding to the same target polynucleotide fragment maximally separated from each other, and a method of producing the same.

Abstract: Provided is a genotyping method. The genotyping method includes using a DNA chip on which just an optimal probe set is immobilized, the optimal probe sets composed of a discriminating probe which perfectly matches a mutant type gene or a wild type gene for each of at least one identified mutation site in each of at least one amplicon contained in a sample and an amplicon probe having a sequence which perfectly matches a region excluding a nucleotide sequence at a mutation site in each amplicon and is absent from the other amplicons, in order to identify which one of a wild type gene and a mutant type gene is present in each mutation site. In this genotyping method, the number of probes used can be reduced and reliability of genotyping results can be increased.

Abstract: A robust genotyping method using a DNA chip is provided. In the DNA chip used in the genotyping method, optimal probe pairs of a wild-perfect match probe and a mutant-perfect match probe are immobilized for each mutation site on a substrate. The method includes setting up a genotyping algorithm using data obtained from hybridization of an identified standard nucleic acid to the DNA chip, and genotyping an unknown target nucleic acid by substituting input vectors that are calculated from hybridization of the target nucleic acid to the DNA chip into the genotyping algorithm. The results of genotyping the target nucleic acid using the optimal probe pairs for each mutation site are statistically robust to errors.