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Line 1: '''Definition''' [[Single nucleotide polymorphism]] (SNP), a variation at a single site in DNA, is the most frequent variation in genome, about 5-10 million SNPs in human genome. As SNPs are highly conserved throughout evolution and within population, the map of SNPs serves as an excellent genotypic marker for research. SNP array is a type of ~~microarrays~~[[microarray]] which is used to detect [[polymorphisms]] within a population. Examples of SNP arrays are the Affymetrix GeneChip Mapping array series 10K, 100K and 500K. '''Principles'''

SNP array: Difference between revisions