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23andMe is a privately held personal genomics and biotechnology company based in Mountain View, California. The company is named for the 23 pairs of chromosomes in a normal human cell.ustomers provide a saliva testing sample that is partially SNP genotyped and results are posted online. In 2008, when the company was offering estimates of predisposition for more than 90 traits and conditions ranging from baldness to blindness, Time magazine named the product Invention of the Year.
Although testing for the 3 categories of DNA (Y-DNA, mtDNA, and atDNA) is the least expensive with 23andMe, note that the shipping costs for anywhere outside the US are considerable.ote that X-chromosome DNA (X-DNA) is carried out at the same time as atDNA (and at no additional cost), but not all companies do matching on X-DNA. See Genetic Genealogy for background information on the different types of DNA and what each DNA test can do.