Haplogroup B | |
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Possible time of origin | 100,000 years BP[1] |
Possible place of origin | Africa,[2] region unknown |
Ancestor | BT |
Descendants | Primary:B1 (M236),B2 (M182),B3 (L1387); Subclades of the above include:B1a (M146);B2b (M112);B2a1a1a1 (M109) |
Defining mutations | M60, M181/Page32, P85, P90, V62, V75, V78, V83, V84, V85, V90, V93, V94, V185, V197, V217, V227, V234, V237, and V44 |
Highest frequencies | Baka 63% (Gabon & Cameroon)[3] - 72% (CAR),[4]Hadzabe (Tanzania) 52%[5]-60%,[6]Nuer (South Sudan) 50%,[7]Mbuti (DRC) 33%[8]-60%,[4]Biaka (CAR) 35%[8]-55%,[4]Central Africa 32%,[9] Tsumkwe San (Namibia) 31%,[4]Khoisan 28%,[9]Shilluk (South Sudan) 27%,[7]Burunge (Tanzania) 25%,[6]Dinka (South Sudan) 23%,[7]Ngumba (Cameroon) 23%[4]-33%,[3]Eviya (Gabon) 21%,[3]Fali (Cameroon) 18%,[8]Sotho–Tswana (South Africa) 18%,[4]Zulu (South Africa) 17%,[4]Eshira (Gabon) 17%,[3]Shake (Gabon) 16%,[3]Hausa (Sudan) 16%,[7]Sukuma (Tanzania) 16%,[5]Bakola (Cameroon) 15%[4]-36%,[3]Copts (Sudan) 15%,[7]Sudan 15%,[9]Kunama (Eritrea) 15%,[10]Tutsi (Rwanda) 15%,[11]Sandawe (Tanzania) 15%,[6]Uldeme (Cameroon) 5%[8]-31%,[4]Nuba (Sudan) 14%,[7]Makina (Gabon) 14%,[3]Southern Africa 13%,[9]Mali 11%,[9]Ewondo (Cameroon) 10%,[8]Ethiopia 10%,[9]Shona (Zimbabwe) 10%[4]Qeshmi (Iran) 8.2%,[12]Bandari (Iran) 2.3%,[12]Hazara (Afghanistan) 5.1%,[13] |
Haplogroup B (M60) is ahuman Y-chromosome DNA haplogroup common to paternal lineages inAfrica. It is a primary branch of thehaplogroup BT.
B (M60) is common in parts of Africa, especially the tropical forests of West-Central Africa. It was the ancestral haplogroup of not only modernPygmies like theBaka andMbuti, but alsoHadzabe from Tanzania, who often have been considered, in large part because of some typological features of their language, to be a remnant ofKhoisan people in East Africa.
According to one study of the Y-DNA of populations inSudan, haplogroup B-M60 is found in approximately 30% (16/53) ofSouthern Sudanese, 16% (5/32) of localHausa people, 14% (4/28) of theNuba of central Sudan, 3.7% (8/216) ofNorthern Sudanese (but only amongCopts andNubians), and 2.2% (2/90) ofWestern Sudanese.[7] According to another study, haplogroup B is found in approximately 15% of Sudanese males, including 12.5% (5/40) B2a1a1a1 (M109/M152) and 2.5% (1/40) B-M60(xM146, M150, M112).[9]
InMadagascar, haplogroup B-M60 has been found in approximately 9% ofMalagasy males, including 6% (2/35) B-M60(xB2b-50f2(P)) and 3% (1/35) B2b-50f2(P).[14]
Family Tree DNA shows a significant number of persons of Haplogroup B-M60 (B-M181) claiming origins from theArabian Peninsula (dominantly Saudi Arabia, but also in Kuwait, Bahrain, Yemen, Qatar, Iraq, United Arab Emirates, and Oman).[15] Sampling bias does not allow for meaningful percentages, but the presence of the haplogroup is solidly attested.
InHormozgan Province inIran, haplogroup B-M60 has been found in 8.2% of a sample of 49Qeshmi people, and in 2.3% of a sample of 131Bandari people.[16]
InAfghanistan, haplogroup B-M60 has been found in 5.1% (3/59) of a sample ofHazara males.[17]
InUnited Kingdom, haplogroup B-M60(xM218) has been found byFTDNA in 1 individual.
Haplogroup B-M236 has been found in 4% (2/48) of a sample ofBamileke males from southernCameroon.[8]
Haplogroup B-M146 has been found in 2% (1/49) of a sample ofMossi males fromBurkina Faso[8] and in 2% (1/44) of a sample of unspecified ethnic affiliation fromMali.[9]
Haplogroup B-M182 has been found in 6% (3/47) of a sample ofMbuti males from theDemocratic Republic of the Congo, 6% (2/33) of a sample ofBakola males from southern Cameroon,[4] 6% (1/18) of a sample ofDama males fromNamibia,[4] and 3% (1/31) of a sample ofBiaka males fromCentral African Republic.[4] The vast majority ofFamily Tree DNA participants in Haplogroup B-M60 test positive for B-M182, with three-fourths of those participants claiming countries of theArabian Peninsula as their ancestral land of origin,[15] attesting to its presence in that area also.
Haplogroup B-M150 has been found in 8% (1/12) of a sample ofMbuti males from theDemocratic Republic of the Congo.[8]
Haplogroup B-M150(xM152) has been observed in 11% (5/47) of a sample of Mbuti from Democratic Republic of the Congo, 11% (1/9) of a sample ofTupuri from northern Cameroon, 11% (1/9) of a sample ofLuo from Kenya, 7% (4/55) of a sample of Dogon from Mali, 6% (1/18) of a sample of Baka from Central African Republic, and 2% (1/42) of a sample of Kikuyu and Kamba from Kenya.[4]
Haplogroup B-M150(xM109/M152, M108.1) has been found in 3% (1/37) of a sample from Central Africa, 2% (1/44) of a sample from Mali, and 1% (1/88) of a sample from Ethiopia.[9]
Without testing for any downstream mutation, haplogroup B-M150 has been found in 33.3% (8/24) of a sample ofNgumba from Cameroon,[3] 20.8% (5/24) of a sample ofEviya from Gabon,[3] 18.2% (4/22) of a sample ofBakola from Cameroon,[3] 14.3% (6/42) of a sample ofEshira from Gabon,[3] 14.0% (6/43) of a sample ofMakina from Gabon,[3] 14.0% (6/43) of a sample ofShake from Gabon,[3] 8.6% (5/58) of a sample ofPunu from Gabon,[3] 8.3% (5/60) of a sample ofTsogo from Gabon,[3] 7.0% (4/57) of a sample ofNzebi from Gabon,[3] 6.7% (1/15) of a sample ofMbugwe from Tanzania,[6] 4.3% (2/46) of a sample ofDuma from Gabon,[3] 4.3% (2/47) of a sample ofObamba from Gabon,[3] 4.2% (2/48) of a sample ofBenga fromGabon,[3] 3.8% (2/53) of a sample ofKota from Gabon,[3] 2.8% (1/36) of a sample ofNdumu from Gabon,[3] 2.1% (1/47) of a sample ofGaloa from Gabon,[3] 2.0% (1/50) of a sample of Akele from Gabon,[3] 1.7% (1/60) of a sample ofFang from Gabon,[3] 1.5% (1/68) of a sample ofSandawe from Tanzania,[6] 1.4% (1/72) of a sample fromQatar,[18] and 0.64% (1/157) of a sample fromSaudi Arabia.[19]
Haplogroup B-M218 has been found in 17% (20/118) of a mixed sample ofNilotic ethnic groups ofKaramojong,Jie andDodos from Karamoja region inUganda.[20] This haplogroup has also been found byFTDNA in 1 individual fromQatar, 3 individuals fromSaudi Arabia,[21] 1 individual fromSyria, 1 individual fromTunisia, 1 individual fromUnited Kingdom.
Haplogroup B2a1a1a1 (M109, M152, P32), previously B2a1a is the most commonly observed subclade of haplogroup B.
InCentral Africa, B-M109 Y-DNA has been found in 23% (7/31) ofNgumba males from southern Cameroon,[4] 18% (7/39) ofFali males from northern Cameroon,[8] 5% (1/21)[8] to 31% (4/13)[4] ofUldeme males from northern Cameroon, 10% (3/29) ofEwondo males from southern Cameroon,[8] 7% (1/15) of a mixed sample of speakers of variousChadic languages from northern Cameroon,[8] 6% (1/18) of a mixed sample of speakers of variousAdamawa languages from northern Cameroon,[8] 6% (2/33) ofBakola males from southern Cameroon,[4] 4% (1/28) ofMandara males from northern Cameroon,[4] and 3% (1/31)[4] to 5% (1/20)[8] ofBiaka males fromCentral African Republic.
InEast Africa, haplogroup B2a1a1a1 Y-DNA has been found in 11% (1/9) of a small sample ofIraqw males fromTanzania,[4] 11% (1/9) of a small sample ofLuo males fromKenya,[4] 8% (2/26) ofMaasai males from Kenya,[4] and 4.5% (4/88) of a sample ofEthiopians.[9]
InSouthern Africa, B-M109 Y-DNA has been found in 18% (5/28) ofSotho–Tswana males fromSouth Africa,[4] 14% (4/29) ofZulu males from South Africa,[4] 13% (7/53) of an ethnically mixed sample of non-Khoisan Southern Africans,[9] 10% (5/49) ofShona males fromZimbabwe,[4] and 5% (4/80) ofXhosa males from South Africa.[4]
InNorth Africa, haplogroup B2a1a1a1 Y-DNA has been found in 12.5% (5/40) ofSudanese[9] and 2% (2/92) ofEgyptians.[4]
InEurasia, B2a1a1a1 (B-M109) has been found in 3% (3/117) of a sample ofIranians from southern Iran[22] and 2% (2/88) of a sample from Pakistan and India.[9]
Haplogroup B-G1 (G1) has been found inUganda in Nilotic speaking populations.[23]
Haplogroup B-M108.1 (M108.1) has been found in 3% (3/88) of a sample from Ethiopia.[9]
Haplogroup B-M43 (M43, P111) has been found in 7% (3/44) of a sample from Mali.[9]
Haplogroup B-M112 (M112, M192, 50f2(P)) has been found mainly amongpygmy populations in Central Africa,Juu (Northern Khoisan) populations in Southern Africa, and theHadzabe in East Africa. It also has been found occasionally in samples of groups who neighbor the aforementioned populations.
Specifically, haplogroup B2b has been observed in 67% (12/18) of a sample of Baka from Central African Republic,[4] 52% (12/23) or 51% (29/57) of a sample of Hadzabe fromTanzania,[5][6] 48% (15/31) of a sample of Biaka from Central African Republic,[4] 43% (20/47) of a sample ofMbuti from theDemocratic Republic of the Congo,[4] 31% (9/29) of a sample of Tsumkwe San fromNamibia,[4] 28% (11/39) of a sample of theNorthern Khoisan-speaking Ju|’hoansi and Sekele peoples,[5][9] 25% (6/24) of a sample ofBurunge from Tanzania,[6] 14% (13/94) of a sample ofTutsi fromRwanda,[11] 13% (9/68) of a sample ofSandawe from Tanzania,[6] 9% (3/32) of a sample of !Kung/Sekele from Namibia,[4] 5% (1/20) of a sample ofTuru from Tanzania,[6] 5% (2/43) of a sample ofWairak from Tanzania,[11] 3% (1/29) of a sample of Zulu fromSouth Africa,[4] 3% (1/33) of a sample of Bakola from southern Cameroon,[4] 3% (1/35) of a sample ofDatog from Tanzania,[6] 3% (1/35) of a sample ofMalagasy,[14] 1.4% (1/69) of a sample ofHutu from Rwanda,[11] 1.4% (1/72) of a sample from Qatar,[18] and 1.3% (2/157) of a sample from Saudi Arabia.[19]
Haplogroup B-P6 has been found in Khoisan populations of Namibia, including 24% (7/29) of a sample of Tsumkwe San and 3% (1/32) of a sample of !Kung/Sekele.[4]
Haplogroup B-M115 has been found in 8% (1/12) of a sample ofMbuti from theDemocratic Republic of the Congo.[8]
Haplogroup B-M30 has been found in 22% (2/9) of a mixed sample of speakers ofCentral Sudanic andSaharan languages from northern Cameroon and in 5% (1/20) of a sample ofBiaka from Central African Republic.[8]
Haplogroup B-M108.2 has been found in 25% (1/4) of a very small sample ofLissongo from Central African Republic.[8]
Haplogroup B-P7 has been observed most frequently in samples of some populations ofpygmies from Central Africa: 67% (12/18) Baka fromCentral African Republic,[4] 45% (14/31) Biaka from Central African Republic,[4] 21% (10/47) Mbuti fromDemocratic Republic of the Congo.[4] This haplogroup also has been found in anIraqw (South Cushitic) individual from Tanzania (1/9 = 11%) and in some samples of Khoisan from Namibia (2/32 = 6% !Kung/Sekele, 2/29 = 7% Tsumkwe San).[4]
Haplogroup B-MSY2.1 has been found in 20% (4/20) of a sample ofBiaka from Central African Republic.[8]
Prior to 2002, there were in academic literature at least seven naming systems for the Y-Chromosome Phylogenetic tree. This led to considerable confusion. In 2002, the major research groups came together and formed the Y-Chromosome Consortium (YCC). They published a joint paper that created a single new tree that all agreed to use. Later, a group of citizen scientists with an interest in population genetics and genetic genealogy formed a working group to create an amateur tree aiming at being above all timely. The table below brings together all of these works at the point of the landmark 2002 YCC Tree. This allows a researcher reviewing older published literature to quickly move between nomenclatures.
YCC 2002/2008 (Shorthand) | (α) | (β) | (γ) | (δ) | (ε) | (ζ) | (η) | YCC 2002 (Longhand) | YCC 2005 (Longhand) | YCC 2008 (Longhand) | YCC 2010r (Longhand) | ISOGG 2006 | ISOGG 2007 | ISOGG 2008 | ISOGG 2009 | ISOGG 2010 | ISOGG 2011 | ISOGG 2012 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B-M60 | 2 | II | 1B | 5 | - | H1 | B | B* | B | B | B | B | B | B | B | B | B | B |
B-M146 | 2 | II | 1B | 5 | - | H1 | B | B1 | B1 | B1a | B1a | B1a | B1a | B1a | B1a | B1a | B1a | B1a |
B-M182 | * | * | * | * | * | * | * | * | B2 | B2 | B2 | B2 | B2 | B2 | B2 | B2 | B2 | B2 |
B-M150 | 2 | II | 1B | 5 | - | H1 | B | B2a* | B2a | B2a | B2a | B2a | B2a | B2a | B2a | B2a | B2a | B2a |
B-M109 | 2 | II | 1B | 5 | - | H1 | B | B2a1 | B2a1 | B2a1a | B2a1a | B2a1a | B2a1a | B2a1a | B2a1a | B2a1a | B2a1a | B2a1a |
B-M108.1 | 2 | II | 1B | 5 | - | H1 | B | B2a2* | B2a2 | B2a2 | B2a2 | B2a2 | B2a2 | B2a2 | B2a2 | B2a2 | removed | removed |
B-M43 | 2 | II | 1B | 5 | - | H1 | B | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a | B2a2a |
B-M112 | 6 | II | 1B | 6 | - | H1 | B | B2b* | B2b | B2b | B2b | B2b | B2b | B2b | B2b | B2b | B2b | B2b |
B-P6 | 6 | II | 1B | 7 | - | H1 | B | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 | B2b1 |
B-M115 | 6 | II | 1B | 6 | - | H1 | B | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 | B2b2 |
B-M30 | 6 | II | 1B | 6 | - | H1 | B | B2b3* | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 | B2b3 |
B-M108.2 | 6 | II | 1B | 6 | - | H1 | B | B2b3a | B2b3a | B2b3a | B2b3a | B2b3a | B2b3a | B2b3a | B2b3a | B2b3a | removed | removed |
B-P7 | 6 | II | 1B | 8 | - | H1 | B | B2b4* | B2b4 | B2b4 | B2b4 | B2b4 | B2b4 | B2b4 | B2b4 | B2b4 | removed | removed |
B-P8 | 6 | II | 1B | 10 | - | H1 | B | B2b4a | B2b4a | B2b4a | B2b4a | B2b4a | B2b4a | B2b4a | B2b4a | B2b4a | removed | removed |
B-M211 | 6 | II | 1B | 9 | - | H1 | B | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b | B2b4b |
The following research teams per their publications were represented in the creation of the YCC Tree.
The phylogenetic tree of haplogroup B subclades is based on the YCC 2008 tree[24] and subsequent published research.