Haplogroup K2b1 (Y-DNA)

Haplogroup K2b1
Possible time of origin	30,000-40,000
Possible place of origin	Southeast Asia; Oceania.
Ancestor	K2b (P331)
Descendants	S (K2b1a) and M (K2b1b)
Defining mutations	P397, P399 [1][2]

Haplogroup K2b1, known sometimes as haplogroup MS, is a human Y-DNA haplogroup, defined by SNPs P397 and P399. It has a complex, diverse and not-yet fully understood internal structure; its downstream descendants include the major haplogroups Haplogroup M (P256) and Haplogroup S (M230).[3][2]

It is not clear at present whether the basal paragroup K2b1* is carried by any living males. Individuals carrying subclades of K2b1 are found primarily among Papuan peoples, Micronesian peoples, indigenous Australians, Polynesians and Negrito minorities in Southeast Asia.

Structure

K2b1 is a direct descendant of K2b – known previously as Haplogroup MPS.

Its only primary branches are: the major haplogroups S (B254), also known as K2b1a (and previously known as Haplogroup S1 or K2b1a4) and M (P256), also known as K2b1b (previously K2b1d).

Distribution

K2b1 is strongly associated with the indigenous peoples of Melanesia (especially the island of New Guinea) and Micronesia, and to a lesser extent Polynesia, where it is generally found only among 5–10% of males. It is found in 83% of males in Papua New Guinea, and up to 60% in the Aeta of the Philippines.[4] The vast majority of living males carrying K2b1 are members of downstream subclades within the major haplogroups M (also known as K2b1b) and S (K2b1a).

Studies of indigenous Australian Y-DNA published in 2014 and 2015, suggest that, before contact with Europeans, about 29% of Australian Aboriginal or Torres Strait Islander males belonged to downstream subclades of K2b1. That is, up to 27% indigenous Australian males carry haplogroup S1a1a1 (S-P308; previously known as K2b1a1 or K-P308),[4] and one study found that approximately 2.0% – i.e. 0.9% (11 individuals) of the sample in a study in which 45% of the total was deemed to be non-indigenous – belonged to haplogroup M1 (M-M4; also known as M-M186 and known previously as haplogroup K2b1d1). All of these males carrying M1 were Torres Strait Islanders.[5] (The other Y-DNA haplogroups found were: basal K2* [K-M526], C1b2b [M347; previously Haplogroup C4], and basal C* [M130].)

Population	K2b1 (including Haplogroups M & S) as a % [6]
Papua New Guinea	82.76%
New Zealand	03.82% (i.e. 1.95% of the 51% Maori males with indigenous Y-DNA)
Fiji	60.75%
Solomon Islands	71.9%
French Polynesia	08.00%
Vanuatu	76.5%
Guam	33.3% (small sample size)
Samoa	08.04%
Kiribati	0% (small sample size)
Tonga	20.69%
Micronesia FDR	66.67%
Marshall Islands	63.64%
Palau	61.5% small sample size
Cook Islands	03.9%
Wallis and Futuna	26%
Tuvalu	36%
Nauru	28.6% (small sample size)
Niue	0% (small sample size)
Tokelau	50% (small sample size)
Hawaii	20% (small sample size from FTDNA)
Aboriginal Australians	29% (657 samples; 56% assumed to be non-indigenous) [5]
Timor	25%
Aeta	60%
Filipinos	04.00% (samples includes a diverse number of minority Filipino ethno-linguistic groups and ethnic minorities.)
Malaysia	02.40% ( small sample size )
Flores	35%
Sulawesi	11.3%
Eastern Indonesia	25.9%
Java	0%
Bali	0.90%
Sumatra	0%
Borneo (Indonesia)	05.80%
West Papua	52.6%
Papua Province	82.6%
Sumba	25.2%
Chuukkese people (Micronesia)	76.5%
Pohnpeian people (Micronesia)	70% (small sample size)

References

"PhyloTree y - Minimal y tree".
Karafet TM, Mendez FL, Sudoyo H, Lansing JS, Hammer MF (June 2014). "Improved phylogenetic resolution and rapid diversification of Y-chromosome haplogroup K-M526 in Southeast Asia". Eur J Hum Genet. 23 (3): 369–373. doi:10.1038/ejhg.2014.106. PMC 4326703. PMID 24896152.
van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau MH (Feb 2014). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. 35 (2): 187–191. doi:10.1002/humu.22468. PMID 24166809. S2CID 23291764.
Karafet 2014
Nagle, N. et al., 2015, "Antiquity and diversity of aboriginal Australian Y-chromosomes", American Journal of Physical Anthropology (epub ahead of print version; abstract).
(i. e. individuals indigenous to Oceania are assumed to be K2b1)

Phylogenetic tree of human Y-chromosome DNA haplogroups [χ 1][χ 2]

A1b

A1b1

F1

F2

F3

GHIJK

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

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.)

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[1] "PhyloTree y - Minimal y tree".

[Karafet2014-2] Karafet TM, Mendez FL, Sudoyo H, Lansing JS, Hammer MF (June 2014). "Improved phylogenetic resolution and rapid diversification of Y-chromosome haplogroup K-M526 in Southeast Asia". Eur J Hum Genet. 23 (3): 369–373. doi:10.1038/ejhg.2014.106. PMC 4326703. PMID 24896152.

[vanOven2014-3] van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau MH (Feb 2014). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. 35 (2): 187–191. doi:10.1002/humu.22468. PMID 24166809. S2CID 23291764.

[Karafet_2014-4] Karafet 2014

[nagle-5] Nagle, N. et al., 2015, "Antiquity and diversity of aboriginal Australian Y-chromosomes", American Journal of Physical Anthropology (epub ahead of print version; abstract).

[6] (i. e. individuals indigenous to Oceania are assumed to be K2b1)

[vanOven2014-7] 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.

[ISOGG2015-8] International Society of Genetic Genealogy (ISOGG; 2015), Y-DNA Haplogroup Tree 2015. (Access date: 1 February 2015.)

[A0-T-9] Haplogroup A0-T is also known as A-L1085 (and previously as A0'1'2'3'4).

[A1-10] Haplogroup A1 is also known as A1'2'3'4.

[LT-11] Haplogroup LT (L298/P326) is also known as Haplogroup K1.

[K2-12] 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.

[K2a-13] 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".

[K2b-14] Haplogroup K2b (M1221/P331/PF5911) is also known as Haplogroup MPS.

[K2e-15] Haplogroup K2e (K-M147) was previously known as "Haplogroup X" and "K2a" (but is a sibling subclade of the present K2a).

[K-M2313-16] 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)

[K2b1-17] Haplogroup K2b1 (P397/P399) is also known as Haplogroup MS, but has a broader and more complex internal structure.

[P-18] Haplogroup P (P295) is also klnown as K2b2.

[S-19] Haplogroup S, as of 2017, is also known as K2b1a. (Previously the name Haplogroup S was assigned to K2b1a4.)

[M-20] Haplogroup M, as of 2017, is also known as K2b1b. (Previously the name Haplogroup M was assigned to K2b1d.)