Efforts to identify the origins of Ashkenazi Jews through DNA analysis began in the 1990s. Currently, there are <answer>three types of genetic origin testing</answer>, autosomal DNA (atDNA), mitochondrial DNA (mtDNA), and Y-chromosomal DNA (Y-DNA). Autosomal DNA is a mixture from an individual's entire ancestry, Y-DNA shows a male's lineage only along his strict-paternal line, mtDNA shows any person's lineage only along the strict-maternal line. Genome-wide association studies have also been employed to yield findings relevant to genetic origins.
How many types of genetic origin testing currently exist?
three types of genetic origin testing