Overview As a primary branch of
haplogroup LT (a.k.a. K1), the
basal, undivergent haplogroup
T* currently has the alternate
phylogenetic name of
K1b and is a sibling of haplogroup
L* (a.k.a. K1a). (Before 2008, haplogroup T and its subclades were known as haplogroup K2. The name K2 has since been reassigned to a primary subclade of haplogroup K.) It has two primary branches:
T1 (T-L206) and T2 (T-PH110). Most males who now belong to haplogroup T1* carry the subclade T-M70 (T1a), a primary branch of T-M206. Haplogroup T is found at exceptionally high levels amongst the
Dir and
Isaaq in
Somaliland,
Djibouti, and
Ethiopia. it is also found at relatively high levels in specific populations in other parts of the world especially amongst Arabs from
UAE in South Eastern
Arabia T-M184 spikes at 19% on
FTDNA. These include
Kurru,
Bauris and
Lodha in
South Asia; among
Toubou in
Chad; Somalilander clans: Isaaq and Dir,
southern Egyptians and
Fula (Fulbe) in north
Cameroon; ;
Zoroastrians,
Bakhtiaris,
Assyrians and
Iraqi Jews in the Middle East. T is a rather rare haplogroup, displaying a global frequency of around 1% (King et al., 2007), but nonetheless it is found at quite high frequencies in
Sephardic Levites (23%) and Sephardic Israelis (13%; Behar et al., 2004). The Russians from the southwest were from the following cities:
Roslavl,
Livny,
Pristen,
Repyevka, and
Belgorod; and
Kuban Cossacks from the
Republic of Adygea.
T1 (T*) T1 is the most common descent of T-M184 haplogroup, being the lineage of more than 95% of all Eurasian T-M184 members. One of their descent lineages is found in high frequencies among northern
Somali clans. However, it appears to have originated somewhere around the
Eastern Mediterranean Basin, perhaps somewhere between Palestine to the
Jordan Valley. The basal T1* subclade appears to have spread to northeastern Anatolia, from the
Levant and
Mesopotamia at least, with the
Pre-Pottery Neolithic B culture (PPNB). Although it is rare in modern populations, T1* has been found in a
Berber individual from
Tunisia, a male in
Syria, and one sequence among ethnic Macedonians in
Macedonia. Zalloua et al. (2008) found nine examples that were L454+ (an SNP equivalent to L162/Page21) from a sample of 54 (i.e. a rate of 16.7%). Rodriguez et al. (2009) found seven cases of L454+ in a sample of 96 (7.3%). The
Pontic Greeks of Anatolia are also reported to possess T1a1. In 2009, a male with the surname Metaxopoulos and a Pontic Greek background was reported to be T-L162(xL208) – according to the Y-Chromosome Genome Comparison Project administered by Adriano Squecco. Greeks from the
Fatsa (originally "Φάτσα") reportedly migrated in antiquity from
Sinope, which was itself colonised by
Ionians (from
Miletus). Another ancient Ionian colony in north-west Anatolia,
Lámpsakos (Lampsacus), had onomastic links to the Pityusic Islands (see above) – Lámpsakos was originally an Ionian colony known as
Pityussa.
T1a1a (L208) This lineage, formed 14,200-11,000 BP, is the largest branch downstream T1a1-L162. The Isaaq clans and dir is T-L208, they found in Somaliland, Djibouti, Somalia and Somali Ethiopia.
T1a1a1a1b1a1* (T-Y3782*) One
Sardinian male from a sample of 187 (a nominal rate of 0.53%) – a resident of the
Province of Cagliari (Sardinian: Casteddu) – has been found to have T-Y3782(xY3836), also known T1a1a1a1b1a1(xT1a1a1a1b1a1a). Also have been found in a German individual and another two from Caucasus. The Bhutanese and the German haplotypes seems to cluster together.
Possible cases from older research ==Modern geographical distribution==