Jat Surname: Y-DNA Haplogroup
Published genetics research or a documented case study links the surname Jat to a specific Y-DNA paternal-line haplogroup.
L-M20 (36.8%, the most common haplogroup), followed by R (28.5%) and Q (15.6%)
Clade L
Also spelled: Jaat
Large study (n=302) that runs counter to the popular assumption that Jats are predominantly R1a/steppe-descended: the indigenous South Asian L haplogroup was actually found to be the single most common lineage.
Source: Mahal DG, Matsoukas IG (2017). "Y-STR Haplogroup Diversity in the Jat Population Reveals Several Different Ancient Origins." Frontiers in Genetics, 8:121.
How to read this. A surname match means some people with that surname, in a specific study or family record, were found to share a haplogroup, most likely due to a shared patrilineal ancestor generations back. It is not proof that you personally carry that haplogroup: surnames change through adoption, remarriage, non-paternity events, and independent origin of the same name in different families. For your own confirmed haplogroup, test your DNA with our HaploAI Y-DNA/mtDNA predictor.
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