can be used to match with other testers who may be related. Companies were later also able to use this data to estimate how much of each ethnicity a customer has. FamilyTreeDNA entered this market in 2010, followed by AncestryDNA in 2012, and the number of tests grew rapidly. By 2018 autosomal testing had become the predominant type of test, and for many companies the only test they offered. MyHeritage launched its testing service in 2016, allowing users to use cheek swabs to collect samples, and introduced new analysis tools in 2019: autoclusters (grouping matches visually into clusters) and family tree theories (suggesting conceivable relations between DNA matches by combining several MyHeritage trees and the Geni global family tree). Living DNA, founded in 2015, uses SNP chips to provide reports on autosomal ancestry, Y, and mtDNA ancestry. By 2019, the combined total of customers at the four largest companies was 26 million. By August 2019, it was reported that about 30 million people had had their DNA tested for genealogical purposes. GEDmatch said in 2018 that about half of their one million profiles were American. Due to the limited geographical distribution of DNA tests, there is inherent racism in the databases and results. The CEO of 23andME, Anne Wojcicki, said in 2020 that her company is "part of the problem." Experts in genetics and health inequities believe the inherent racism of these DNA analyses can be addressed by building diverse ethnocultural teams and encouraging Black, Indigenous and People of Color to get their DNA tested. Genetic genealogy revolution The publication of The Seven Daughters of Eve by Sykes in 2001, which described the seven major haplogroups of European ancestors, helped push personal ancestry testing through DNA tests into wide public notice. With the growing availability and affordability of genealogical DNA testing, genetic genealogy as a field grew rapidly. By 2003, the field of DNA testing of surnames was declared officially to have "arrived" in an article by Jobling and Tyler-Smith in Nature Reviews Genetics. The number of firms offering tests, and the number of consumers ordering them, rose dramatically. In 2018, a paper in Science Magazine estimated that a DNA genealogy search on anybody of European descent would result in a third cousin or closer match 60% of the time. Genographic Project The original Genographic Project was a five-year research study launched in 2005 by the National Geographic Society and