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, and Polynesians.
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.
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 | 0% | ||
Fiji | 60.75% | ||
Solomon Islands | 30% | ||
French Polynesia | 08.00% | ||
Vanuatu | 18.5% | ||
Guam | 33.3% (small sample size) | ||
Samoa | 08.04% | ||
Kiribati | 0% (small sample size) | ||
Tonga | 23% M haplogroup in one study and 26% s haplogroup in a separate study and told in that study to be up to 43% haplogroup m and haplogroup s there | 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 | 20% (657 samples; 56% assumed to be non-indigenous) [5] | ||
Timor | 6% | ||
Aeta | 0% | Chinese | 0% |
Filipinos | 0% | ||
Malaysia | 02.40% ( small sample size ) | ||
Flores | 0% ( Samples includes diverse ethnicities ) | ||
Sulawesi | 11.3% ( Samples includes diverse ethnicities ) | ||
Eastern Indonesia (Wallacea) | 25.9% ( Samples includes diverse ethnicities ) | ||
Java | 0% | ||
Bali | 0.9% | ||
Sumatra | 0% | ||
Borneo (Indonesia) | 05.80% ( samples includes diverse ethnic minorities ) | ||
West Papua | 52.6% | ||
Papua Province | 82.6% | ||
Sumba | 25.2% | ||
Chuukkese people (Micronesia) | 76.5% | ||
Pohnpeian people (Micronesia) | 70% (small sample size) |
References
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