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The Genealogical DNA Analysis Tool (GDAT) is a desktop app by Beckins LLC that uses autosomal DNA to help users research and expand their family trees. It stores all data locally in an encrypted database on the user’s computer (not cloud), supports importing data from major testing services, and offers analysis tools such as triangulation, segment analysis, chromosome mapping, and MRCA/ICW-based relatives grouping. GDAT focuses on identifying most recent common ancestors and organizing profiles, DNA relatives, segments, and ahnentafels to enable in-depth genealogical DNA analysis; it replaced Genome Mate in 2020 and is available for Windows and Mac.
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