Megan Rolf (Oklahoma State University): Imputation is a process whereby we take lower density genotyping information, and we fill in missing genotypes so that we can get additional data at low cost. For example, we might take a low density chip, like a 7,000 SNP chip, and impute the missing genotypes to get 50k genomic information, or 50,000 genotypes for an animal. We can use, for example, a low density SNP genotyping chip and fill in missing information based on an animal's pedigree, or related animals, so that we can get a larger amount of data at a smaller cost.
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