Method for detecting a plurality of nucleotide polymorphisms at a single wavelength using a plurality of oligonucleotides modified with fluorescent dye having the same or close detection wavelength

Disclosed is a method for simultaneously detecting a plurality of nucleotide polymorphisms, comprising detecting the plurality of nucleotide polymorphisms at a single wavelength by using a plurality of oligonucleotides each labeled with a fluorescent dye, each of which oligonucleotide hybridizes to a region containing at least one of the plurality of nucleotide polymorphisms, wherein the detection wavelength of the fluorescent dyes labeling the plurality of oligonucleotides are the same or similar; the plurality of oligonucleotides are designed such that the Tm values of the plurality of oligonucleotides for each of the sequences of said regions to be hybridized containing a first genotype of the nucleotide polymorphisms are similar to each other; and each of the plurality of oligonucleotides is designed such that the Tm value for the sequence of the region to be hybridized containing the first genotype is different from the Tm value for the sequence of said region to be hybridized containing a second genotype by 3°C or more.