Haplogroup K2a | |
---|---|
Possible time of origin | approximately 47,000 years BP. [1] [2] [3] (Based on the immediate ancestor K2 originating 47,000–55,000 BP, [4] and the secondary descendant NO approximately 38,000 to 47,000 BP.) |
Possible place of origin | Central Asia [5] or Southeast Asia [4] |
Ancestor | K2 (M526) |
Descendants | Sole primary subclade: K-M2313 (M2313); [3] Confirmed secondary subclades: |
Defining mutations | M2308, Z4842 [6] |
Haplogroup K2a (M2308, Z4842) is a human Y-chromosome DNA haplogroup. K2a is a primary subclade of haplogroup K2 (M526), which in turn is a primary descendant of haplogroup K (M9). Its sole primary descendant is haplogroup K-M2313 (M2313, Z4858 S11799). [3] [7]
As of 2020, K-M2313 is known to have two primary subclades: Haplogroup NO1 (a.k.a. NO-M214), which has numerous members and the extremely rare K-Y28299, [3] sometimes known as NO2.
Basal, undivergent K2a* (K-M2308*) has been found only in the remains of two Upper Paleolithic individuals, known as "Ust'-Ishim man and "Oase-1", [3] who lived in Siberia and the Banat region of south-central Europe, respectively, about 37–45 ky BP. No examples of K-M2313* or NO1* (NO-M214*) have been identified in living males or remains. However, subclades of NO1 include a majority of living males in East Asia, Northern Eurasia and South East Asia. K-Y28299 has been found in three living individuals from India. [8] Another two other living males, who have been documented as belonging to K-M2313(xM214), have not been tested for Y28299 (and therefore may belong to K-Y28299). These K-M2313(xM214) individuals have ethnic ties to South Asia and South East Asia respectively: a Telugu from India and an ethnic Malay from Singapore.
According to geneticist Spencer Wells, haplogroup K probably originated in the Middle East or Central Asia, possibly in the vicinity of Iran or Pakistan. [5] However, Karafet et al. (2014) proposed that "rapid diversification ... of K-M526", also known as K2, likely occurred in Southeast Asia and later expanded to mainland Asia, although they could not rule out that it might have arisen in Eurasia and later went extinct there, and that either of these scenarios are "equally parsimonius". [9]
Before 2016, many authorities considered that the SNP M2308 was always found in conjunction with SNPs such as M2313 and M214. [3] However, researchers such as G. David Poznik discovered examples of Y-DNA that had some, but not all, of the SNPs peculiar to NO (M214), but also lacked SNPs identifying other primary subclades of K2 (M526). [3] Poznik et al. 2016 therefore identified K2a (M2308), K-M2313 and NO (M214) as "parent", "child" and "grandchild" clades respectively. (While Poznik used the name "K2a1" for K-M2313, this has not been widely adopted – possibly because K2a1 has sometimes been used as an alternate name for other, less closely related haplogroups.) Poznik et al. also found that K-Y28301 – which has living members in India – is descended from K-M2313. The above findings by Poznik et al. were reiterated by the work of Moreno-Mayar et al. in 2018. [10]
As of 2018, authorities like the International Society of Genetic Genealogy (ISOGG) have not integrated the discoveries of Poznik et al.
There is evidence of at least two additional primary branches within K-M2308 (Poznik: K2a) and/or K-M2313 (Poznik: K2a1).
K2aK-M2308 (M2308, CTS11667) [3]
? "NO1~" [Note 5] (CTS707/M2306) [11]
K2a* has been found only in the paleolithic remains mentioned above:
As of 2016, two living males had been found to carry K-M2313(xNO-M214) – a British Asian who identifies as Telugu and an ethnic Malay sampled in Singapore. [3] Note that they were NOT tested for Y28299.
Basal examples of haplogroup NO* have not been identified.
Subclades of haplogroup NO include a majority of living males in East Asia, South East Asia and northern Eurasia.
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K-Y28299(xY28301) has been found in a living male from India. [8]
K-Y28301, a subclade of K-Y28299, has been found in living individuals with their origins in Andhra Pradesh and Arunachal Pradesh India. [8]
Haplogroup G (M201) is a human Y-chromosome haplogroup. It is one of two branches of the parent haplogroup GHIJK, the other being HIJK.
Haplogroup E-V38, also known as E1b1a-V38, is a major human Y-chromosome DNA haplogroup. E-V38 is primarily distributed in Africa. E-V38 has two basal branches, E-M329 and E-M2. E-M329 is a subclade mostly found in East Africa. E-M2 is the predominant subclade in West Africa, Central Africa, Southern Africa, and the region of African Great Lakes; it also occurs at moderate frequencies in North Africa, West Asia, and Southern Europe.
Haplogroup K or K-M9 is a genetic lineage within human Y-chromosome DNA haplogroup. A sublineage of haplogroup IJK, K-M9, and its descendant clades represent a geographically widespread and diverse haplogroup. The lineages have long been found among males on every continent except Antarctica.
Haplogroup N (M231) is a Y-chromosome DNA haplogroup defined by the presence of the single-nucleotide polymorphism (SNP) marker M231.
Haplogroup P also known as P-F5850 or K2b2 is a Y-chromosome DNA haplogroup in human genetics. P-F5850 is a branch of K2b, which is a branch of Haplogroup K2 (K-M526).
In human genetics, a human Y-chromosome DNA haplogroup is a haplogroup defined by specific mutations in the non-recombining portions of DNA on the male-specific Y chromosome (Y-DNA). Individuals within a haplogroup share similar numbers of short tandem repeats (STRs) and single-nucleotide polymorphisms (SNPs). The Y-chromosome accumulates approximately two mutations per generation, and Y-DNA haplogroups represent significant branches of the Y-chromosome phylogenetic tree, each characterized by hundreds or even thousands of unique mutations.
Haplogroup NO1, also known as NO-M214, is a human Y-chromosome DNA haplogroup. NO1 is the sole confirmed subclade of Haplogroup K- M2313, which is the sole subclade of Haplogroup K2a (K-M2308). NO is the dominant Y-DNA haplogroup in most parts of eastern and northern Eurasia, including East Asia, Siberia and northern Fennoscandia.
Haplogroup I-M253, also known as I1, is a Y chromosome haplogroup. The genetic markers confirmed as identifying I-M253 are the SNPs M253,M307.2/P203.2, M450/S109, P30, P40, L64, L75, L80, L81, L118, L121/S62, L123, L124/S64, L125/S65, L157.1, L186, and L187. It is a primary branch of Haplogroup I-M170 (I*).
Haplogroup I-M438, also known as I2, is a human DNA Y-chromosome haplogroup, a subclade of haplogroup I-M170. Haplogroup I-M438 originated some time around 26,000–31,000 BCE. It originated in Europe and developed into several main subgroups: I2-M438*, I2a-L460, I2b-L415 and I2c-L596. The haplogroup can be found all over Europe and reaches its maximum frequency in the Dinaric Alps (Balkans) via founder effect, related to the migrations of the Early Slavs to the Balkan peninsula.
Haplogroup K2, also known as K-M526 and formerly known as K(xLT) and MNOPS, is a human Y-DNA haplogroup.
Haplogroup R1b (R-M343), previously known as Hg1 and Eu18, is a human Y-chromosome haplogroup.
Haplogroup R2, or R-M479, is a Y-chromosome haplogroup characterized by genetic marker M479. It is one of two primary descendants of Haplogroup R (R-M207), the other being R1 (R-M173).
The tables below provide statistics on the human Y-chromosome DNA haplogroups most commonly found among ethnolinguistic groups and populations from East and South-East Asia.
Haplogroup Q-NWT01 is a subclade of Y-DNA Haplogroup Q-MEH2. Haplogroup Q-NWT01 is defined by the presence of the F746/NWT01 Single Nucleotide Polymorphism (SNP).
Ust'-Ishim man is the term given to the 45,000-year-old remains of one of the early modern humans to inhabit western Siberia. The fossil is notable in that it had intact DNA which permitted the complete sequencing of its genome, one of the oldest modern human genomes to be so decoded.
Haplogroup C-M48 also known as C2b1a2 is a Y-chromosome DNA haplogroup.
Haplogroup S1a is a human Y-DNA haplogroup, defined by SNPs Z41335, Z41336, Z41337, Z41338, Z41339, Z41340, and Z41341.
Haplogroup P1, also known as P-M45 and K2b2a, is a Y-chromosome DNA haplogroup in human genetics. Defined by the SNPs M45 and PF5962, P1 is a primary branch (subclade) of P.
As with all modern European nations, a large degree of 'biological continuity' exists between Bosnians and Bosniaks and their ancient predecessors with Y chromosomal lineages testifying to predominantly Paleolithic European ancestry. Studies based on bi-allelic markers of the NRY have shown the three main ethnic groups of Bosnia and Herzegovina to share, in spite of some quantitative differences, a large fraction of the same ancient gene pool distinct for the region. Analysis of autosomal STRs have moreover revealed no significant difference between the population of Bosnia and Herzegovina and neighbouring populations.
Haplogroup D, also known as D-CTS3946, is a Y-chromosome haplogroup. Like its relative distant sibling, haplogroup E-M96, D-CTS3946 has the YAP+ unique-event polymorphism, which defines their parent, haplogroup DE. D-CTS3946 has two basal branches, D1 and D2. D1 and D2 are found primarily in East Asia, at low frequency in Central Asia and Southeast Asia, and at very low frequency in Western Africa and Western Asia.