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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
Haplogroup LT (L298-P326).png
Possible time of origin49,600-41,400 years BP[1]
AncestorK
DescendantsL, T
Defining mutationsL298 and P326

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

StructureEdit

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.

DistributionEdit

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.

ReferencesEdit

  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.
"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