Haplogroup LT

Haplogroup LT or L298/P326, also known as K1 (and previously as Haplogroup K2), is a Y-chromosome DNA haplogroup. Its defining SNP mutations are L298 and P326.

Haplogroup LT
Possible time of origin	49,600-41,400 years BP[1]
Ancestor	K
Descendants	L, T
Defining mutations	L298 and P326

No confirmed cases of the basal paragroup LT* have been identified among living males or human remains.

Structure

It is generally believed that LT (L298/P326) originated somewhere in West Asia.

LT is a direct descendant of haplogroup K (M9).

The direct descendants of LT are haplogroup L (M20), also known as K1a, and haplogroup T (M184), also known as K1b.[2][3]

The modern distribution of haplogroup L in South Asia and West Asia.

The modern distribution of haplogroup T in Africa, Asia and Europe.

The modern distribution within Europe of haplogroups L and T.

Distribution

Y-DNA haplogroup LT is an old lineage widely distributed at low concentrations. It was established approximately 30,000-40,000 years ago, probably in South Asia or West Asia.

Its descendants are found mainly in populations indigenous to the Horn of Africa, North Africa, South Asia, West Asia, Central Asia and Europe.

L-M20 is found at its highest frequency in India, Pakistan and among the Balochs of Afghanistan, and at low frequencies in the Middle East and Europe.

T-M184 is most common in the Horn of Africa, the Nile Valley, the Arabian peninsula, Iran, as well as in some regions of Eastern India and Europe.

References

1. YFull YTree v4.02
2. International Society of Genetic Genealogy, 2015, Y-DNA Haplogroup Tree 2015 (30 May 2015).
3. Chiaroni, J.; Underhill, P. A.; Cavalli-Sforza, L. L. (December 2009). "Y chromosome diversity, human expansion, drift, and cultural evolution". Proc. Natl. Acad. Sci. U.S.A. 106 (48): 20174–9. Bibcode:2009PNAS..10620174C. doi:10.1073/pnas.0910803106. JSTOR 25593348. PMC 2787129. PMID 19920170.

Phylogenetic tree of human Y-chromosome DNA haplogroups [χ 1][χ 2]
	"Y-chromosomal Adam"
		A00	A0-T [χ 3]
			A0	A1 [χ 4]
				A1a	A1b
					A1b1		BT
							B	CT
								DE						CF
							D	E		C		F
															F1	F2		F3	GHIJK
																				G	HIJK
																					IJK	H
														IJ	K
									I	J		LT [χ 5]		K2 [χ 6]
																L	T		K2a [χ 7]	K2b [χ 8]	K2c	K2d	K2e [χ 9]
																			K-M2313 [χ 10]		K2b1 [χ 11]	P [χ 12]
																			NO		S [χ 13]	M [χ 14]		P1	P2
																		N	O			Q	R
Y-DNA by population Y-DNA haplogroups of historic people Footnotes  Van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau HD (2014). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. 35 (2): 187–91. doi:10.1002/humu.22468. PMID 24166809. International Society of Genetic Genealogy (ISOGG; 2015), Y-DNA Haplogroup Tree 2015. (Access date: 1 February 2015.) Haplogroup A0-T is also known as A-L1085 (and previously as A0'1'2'3'4). Haplogroup A1 is also known as A1'2'3'4. Haplogroup LT (L298/P326) is also known as Haplogroup K1. Between 2002 and 2008, Haplogroup T-M184 was known as "Haplogroup K2". That name has since been re-assigned to K-M526, the sibling of Haplogroup LT. Haplogroup K2a (M2308) and its primary subclade K-M2313 were separated from Haplogroup NO (F549) in 2016. (This followed the publication of: Poznik GD, Xue Y, Mendez FL, et al. (2016). "Punctuated bursts in human male demography inferred from 1,244 worldwide Y-chromosome sequences". Nature Genetics. 48 (6): 593–9. doi:10.1038/ng.3559. PMC 4884158. PMID 27111036. In the past, other haplogroups, including NO (M214) and K2e had also been identified with the name "K2a". Haplogroup K2b (M1221/P331/PF5911) is also known as Haplogroup MPS. Haplogroup K2e (K-M147) was previously known as "Haplogroup X" and "K2a" (but is a sibling subclade of the present K2a). K-M2313*, which as yet has no phylogenetic name, has been documented in two living individuals, who have ethnic ties to India and South East Asia. In addition, K-Y28299, which appears to be a primary branch of K-M2313, has been found in three living individuals from India. See: Poznik op. cit.; YFull YTree v5.08, 2017, "K-M2335", and; PhyloTree, 2017, "Details of the Y-SNP markers included in the minimal Y tree" (Access date of these pages: 9 December 2017) Haplogroup K2b1 (P397/P399) is also known as Haplogroup MS, but has a broader and more complex internal structure. Haplogroup P (P295) is also klnown as K2b2. Haplogroup S, as of 2017, is also known as K2b1a. (Previously the name Haplogroup S was assigned to K2b1a4.) Haplogroup M, as of 2017, is also known as K2b1b. (Previously the name Haplogroup M was assigned to K2b1d.)