TOKYO--Japan will start a national project to locate and map single-nucleotide polymorphisms (SNPs) in the Japanese population, according to a Nature report. The initiative is expected to map between 100,000 and 150,000 SNPs over two years, using samples from no fewer than 50 Japanese people. Information from other Asian countries will be included in the future. Japanese government divisions, academic institutions, and the private sector will cooperate in the undertaking.