Possible time of origin 60,000-65,000 years BP Ancestor BT | Possible place of origin Unknown | |
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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) - 72% (CAR), Hadzabe (Tanzania) 52%-60%, Nuer (South Sudan) 50%, Mbuti (DRC) 33%-60%, Biaka (CAR) 35%-55%, Central Africa 32%, Tsumkwe San (Namibia) 31%, Khoisan 28%, Shilluk (South Sudan) 27%, Burunge (Tanzania) 25%, Dinka (South Sudan) 23%, Ngumba (Cameroon) 23%-33%, Eviya (Gabon) 21%, Fali (Cameroon) 18%, Sotho–Tswana (South Africa) 18%, Zulu (South Africa) 17%, Eshira (Gabon) 17%, Shake (Gabon) 16%, Hausa (Sudan) 16%, Sukuma (Tanzania) 16%, Bakola (Cameroon) 15%-36%, Copts (Sudan) 15%, Sudan 15%, Kunama (Eritrea) 15%, Tutsi (Rwanda) 15%, Sandawe (Tanzania) 15%, Uldeme (Cameroon) 5%-31%, Nuba (Sudan) 14%, Makina (Gabon) 14%, Southern Africa 13%, Mali 11%, Ewondo (Cameroon) 10%, Ethiopia 10%, Shona (Zimbabwe) 10% Qeshmi (Iran) 8,2%, Bandari (Iran) 2,3%, Hazara (Afghanistan) 5,1%, | ||
Haplogroup B (B-M60) is a Y-DNA haplogroup common to paternal lineages in Africa, It is a primary branch of Haplogroup BT.
Contents
- Distribution
- B M236
- B M146
- B M182
- B M150
- B M112
- Phylogenetic history
- Original research publications
- Phylogenetic trees
- References
B-M60 is common in parts of Africa, especially the tropical forests of West-Central Africa. It was the ancestral haplogroup of not only modern Pygmies like the Baka and Mbuti, but also Hadzabe from Tanzania, who often have been considered, in large part because of some typological features of their language, to be a remnant of Khoisan people in East Africa.
Distribution
According to one study of the Y-DNA of populations in Sudan, haplogroup B-M60 is found in approximately 30% (16/53) of Southern Sudanese, 16% (5/32) of local Hausa people, 14% (4/28) of the Nuba of central Sudan, 3.7% (8/216) of Northern Sudanese (but only among Copts and Nubians), and 2.2% (2/90) of Western Sudanese. 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).
In Madagascar, haplogroup B-M60 has been found in approximately 9% of Malagasy males, including 6% (2/35) B-M60(xB2b-50f2(P)) and 3% (1/35) B2b-50f2(P).
In Hormozgan Province in Iran, haplogroup B-M60 has been found in 8.2% of a sample of 49 Qeshmi people, and in 2.3% of a sample of 131 Bandari people.
In Afghanistan, haplogroup B-M60 has been found in 5.1% (3/59) of a sample of Hazara males.
In United Kingdom, haplogroup B-M60(xM218) has been found by FTDNA in 1 individual.
B-M236
Haplogroup B-M236 has been found in 4% (2/48) of a sample of Bamileke males from southern Cameroon.
B-M146
Haplogroup B-M146 has been found in 2% (1/49) of a sample of Mossi males from Burkina Faso and in 2% (1/44) of a sample of unspecified ethnic affiliation from Mali.
B-M182
Haplogroup B-M182 has been found in 6% (3/47) of a sample of Mbuti males from the Democratic Republic of the Congo, 6% (2/33) of a sample of Bakola males from southern Cameroon, 6% (1/18) of a sample of Dama males from Namibia, and 3% (1/31) of a sample of Biaka males from Central African Republic.
B-M150
Haplogroup B-M150 has been found in 8% (1/12) of a sample of Mbuti males from the Democratic Republic of the Congo.
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 of Tupuri from northern Cameroon, 11% (1/9) of a sample of Luo 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.
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.
Without testing for any downstream mutation, haplogroup B-M150 has been found in 33.3% (8/24) of a sample of Ngumba from Cameroon, 20.8% (5/24) of a sample of Eviya from Gabon, 18.2% (4/22) of a sample of Bakola from Cameroon, 14.3% (6/42) of a sample of Eshira from Gabon, 14.0% (6/43) of a sample of Makina from Gabon, 14.0% (6/43) of a sample of Shake from Gabon, 8.6% (5/58) of a sample of Punu from Gabon, 8.3% (5/60) of a sample of Tsogo from Gabon, 7.0% (4/57) of a sample of Nzebi from Gabon, 6.7% (1/15) of a sample of Mbugwe from Tanzania, 4.3% (2/46) of a sample of Duma from Gabon, 4.3% (2/47) of a sample of Obamba from Gabon, 4.2% (2/48) of a sample of Benga from Gabon, 3.8% (2/53) of a sample of Kota from Gabon, 2.8% (1/36) of a sample of Ndumu from Gabon, 2.1% (1/47) of a sample of Galoa from Gabon, 2.0% (1/50) of a sample of Akele from Gabon, 1.7% (1/60) of a sample of Fang from Gabon, 1.5% (1/68) of a sample of Sandawe from Tanzania, 1.4% (1/72) of a sample from Qatar, and 0.64% (1/157) of a sample from Saudi Arabia.
B-M218
Haplogroup B-M218 has been found in 17% (20/118) of a mixed sample of Nilotic ethnic groups of Karamojong, Jie and Dodos from Karamoja region in Uganda. This haplogroup has also been found by FTDNA in 1 individual from Qatar, 3 individuals from Saudi Arabia, 1 individual from Syria, 1 individual from Tunisia, 1 individual from United Kingdom.
B-M109
Haplogroup B2a1a1a1 (M109, M152, P32), previously B2a1a is the most commonly observed subclade of haplogroup B.
In Central Africa, B-M109 Y-DNA has been found in 23% (7/31) of Ngumba males from southern Cameroon, 18% (7/39) of Fali males from northern Cameroon, 5% (1/21) to 31% (4/13) of Uldeme males from northern Cameroon, 10% (3/29) of Ewondo males from southern Cameroon, 7% (1/15) of a mixed sample of speakers of various Chadic languages from northern Cameroon, 6% (1/18) of a mixed sample of speakers of various Adamawa languages from northern Cameroon, 6% (2/33) of Bakola males from southern Cameroon, 4% (1/28) of Mandara males from northern Cameroon, and 3% (1/31) to 5% (1/20) of Biaka males from Central African Republic.
In East Africa, haplogroup B2a1a1a1 Y-DNA has been found in 11% (1/9) of a small sample of Iraqw males from Tanzania, 11% (1/9) of a small sample of Luo males from Kenya, 8% (2/26) of Massai males from Kenya, and 4.5% (4/88) of a sample of Ethiopians.
In Southern Africa, B-M109 Y-DNA has been found in 18% (5/28) of Sotho–Tswana males from South Africa, 14% (4/29) of Zulu males from South Africa, 13% (7/53) of an ethnically mixed sample of non-Khoisan Southern Africans, 10% (5/49) of Shona males from Zimbabwe, and 5% (4/80) of Xhosa males from South Africa.
In North Africa, haplogroup B2a1a1a1 Y-DNA has been found in 12.5% (5/40) of Sudanese and 2% (2/92) of Egyptians.
In Eurasia, B2a1a1a1 (B-M109) has been found in 3% (3/117) of a sample of Iranians from southern Iran and 2% (2/88) of a sample from Pakistan and India.
B-G1
Haplogroup B-G1 (G1) has been found in Uganda in Nilotic speaking populations.
B-M108.1
Haplogroup B-M108.1 (M108.1) has been found in 3% (3/88) of a sample from Ethiopia.
B-M43
Haplogroup B-M43 (M43, P111) has been found in 7% (3/44) of a sample from Mali.
B-M112
Haplogroup B-M112 (M112, M192, 50f2(P)) has been found mainly among pygmy populations in Central Africa, Juu (Northern Khoisan) populations in Southern Africa, and the Hadzabe 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, 52% (12/23) or 51% (29/57) of a sample of Hadzabe from Tanzania, 48% (15/31) of a sample of Biaka from Central African Republic, 43% (20/47) of a sample of Mbuti from the Democratic Republic of the Congo, 31% (9/29) of a sample of Tsumkwe San from Namibia, 28% (11/39) of a sample of the Northern Khoisan-speaking Ju|’hoansi and Sekele peoples, 25% (6/24) of a sample of Burunge from Tanzania, 14% (13/94) of a sample of Tutsi from Rwanda, 13% (9/68) of a sample of Sandawe from Tanzania, 9% (3/32) of a sample of !Kung/Sekele from Namibia, 5% (1/20) of a sample of Turu from Tanzania, 5% (2/43) of a sample of Wairak from Tanzania, 3% (1/29) of a sample of Zulu from South Africa, 3% (1/33) of a sample of Bakola from southern Cameroon, 3% (1/35) of a sample of Datog from Tanzania, 3% (1/35) of a sample of Malagasy, 1.4% (1/69) of a sample of Hutu from Rwanda, 1.4% (1/72) of a sample from Qatar, and 1.3% (2/157) of a sample from Saudi Arabia.
B-P6
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.
B-M115
Haplogroup B-M115 has been found in 8% (1/12) of a sample of Mbuti from the Democratic Republic of the Congo.
B-M30
Haplogroup B-M30 has been found in 22% (2/9) of a mixed sample of speakers of Central Sudanic and Saharan languages from northern Cameroon and in 5% (1/20) of a sample of Biaka from Central African Republic.
B-M108.2
Haplogroup B-M108.2 has been found in 25% (1/4) of a very small sample of Lissongo from Central African Republic.
B-P7
Haplogroup B-P7 has been observed most frequently in samples of some populations of pygmies from Central Africa: 67% (12/18) Baka from Central African Republic, 45% (14/31) Biaka from Central African Republic, 21% (10/47) Mbuti from Democratic Republic of the Congo. This haplogroup also has been found in an Iraqw (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).
B-MSY2.1
Haplogroup B-MSY2.1 has been found in 20% (4/20) of a sample of Biaka from Central African Republic.
Phylogenetic history
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.
Original research publications
The following research teams per their publications were represented in the creation of the YCC Tree.
Phylogenetic trees
The phylogenetic tree of haplogroup B subclades is based on the YCC 2008 tree and subsequent published research.