Haplogroup T-M184 (Y-DNA)
| Haplogroup T-M184 | |
|---|---|
 |
|
| Possible time of origin | 39,800-45,500 years BP |
| Ancestor | LT |
| Descendants | T1 (T-L206); T2 (T-PH110) |
| Defining mutations | M184/PAGES34/USP9Y+3178, M272, PAGES129, L810, L455, L452, L445 |
| Highest frequencies | Dir (clan) Issa/Gadabuursi, , Bauris, Armenian Sasuntzis, Chians, Rural Saccensi, Aquilanis, Fulbe, Eivissencs, Mirandeses, Northeastern Portuguese Jews, Cretans from Lasithi, Rajus, Mahli, Lemba in South Africa, Zoroastrians in Kerman, Bakhtiaris, Southern Egyptians |
Haplogroup T-M184, also known as haplogroup T, is a human Y-chromosome DNA haplogroup. The unique-event polymorphism (UEP) that defines this clade is the single nucleotide polymorphism (SNP) known as M184. Other SNPs – M272, PAGES129, L810, L455, L452, and L445 – are considered to be phylogenetically equivalent to M184.
T-M184 is an immediate descendant of haplogroup LT, whose parent clade is haplogroup K. Before 2008, haplogroup T (or T1a/M70) was known as haplogroup K2, a name that has since been reassigned to a sibling clade of haplogroup LT.
Haplogroup T is unusual in that it is both relatively rare and geographically widespread. The clade probably originated around 40,000 years ago T-M184 is found at its highest frequencies among some populations in East Africa and East India, the arrival of the lineage in these geographical regions is due to relatively recent migration.
According to the Genographic Project the T-M184 frequencies in Germany goes from 3% to 24%, several studies give frequencies in Caucasus from 0% to 12% and the frequency in Bhutan is less than 5%.
T2 (T-PH110), a basal primary branch of T-M184, has been found in three very separate geographical regions: the North European Plain; the Kura-Araks Basin of the Caucasus and; Bhutan. None of these regions, however, now appears to feature populations with high frequencies of haplogroup T-M184.
The other primary branch, Haplogroup T-M206 (T1), is far more common than T2 among modern populations in Eurasia and Africa. It appears to have originated somewhere in western Asia, possibly somewhere between north-eastern Anatolia and the Zagros mountains. T1* may have expanded with the Pre-Pottery Neolithic B culture (PPNB).
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