Haplogroup A-L1085, also known as haplogroup A0-T is a human

Y-DNA haplogroup 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 sh ...

. It is part of the paternal lineage of almost all humans alive today. The SNP L1085 has played two roles in

population genetics Population genetics is a subfield of genetics that deals with genetic differences within and among populations, and is a part of evolutionary biology. Studies in this branch of biology examine such phenomena as Adaptation (biology), adaptation, s ...

: firstly, most Y-DNA haplogroups have diverged from it and; secondly, it defines the undiverged basal clade A-L1085*. A0-T has two primary branches: A-V148 (also known as haplogroup A0) and haplogroup A-P305 (haplogroup A1).

Origin

Many proposals for haplogroup A-L1085's origin suggest it was associated with the ancestral population of Southern Africa's hunter-gatherers. This is because haplogroup A-L1085 lineages are frequent among the

San people The San peoples (also Saan), or Bushmen, are the members of any of the indigenous hunter-gatherer cultures of southern Africa, and the oldest surviving cultures of the region. They are thought to have diverged from other humans 100,000 to 200 ...

. However, the A-L1085 lineages of Southern Africa are

subclades In genetics, a subclade is a subgroup of a haplogroup. Naming convention Although human mitochondrial DNA (mtDNA) and Y chromosome DNA (Y-DNA) haplogroups and subclades are named in a similar manner, their names belong to completely separate syste ...

of A lineages found in other parts of Africa, mostly among

Nilotic peoples The Nilotic peoples are peoples indigenous to South Sudan and the Nile Valley who speak Nilotic languages. They inhabit South Sudan and the Gambela Region of Ethiopia, while also being a large minority in Kenya, Uganda, the north eastern borde ...

but also among other Africans. This suggests that A-L1085 lineages arrived in Southern Africa from elsewhere. The two most basal lineages of Haplogroup A-L1085, A-V148 and A-P305, have been detected in West Africa, Northwest Africa and Central Africa. Cruciani et al. 2011 suggests that these lineages may have emerged somewhere in between Central and Northwest Africa, though such an interpretation is still preliminary due to the incomplete geographic coverage of African y-chromosomes. Initial studies reported that Haplogroup A-L1085 lineages emerged around 60,000 years ago which was significantly more recent than TMRCA for mitochondrial DNA lineages which coalesce to between 150-200kya. Cruciani et al. 2011 with major restructuring of branches pushed back the root of the Y-chromosome tree to 142,000 years ago. In November 2012, a new study by Scozzari et al. reinforced "the hypothesis of an origin in the north-western quadrant of the African continent for the ''A1b haplogroup'', and, together with recent findings of ancient Y-Chromosome lineages in central-western Africa, provide new evidence regarding the geographical origin of human MSY diversity".

Geographical distribution

Central Africa

Haplogroup A-M13 has been observed in populations of northern Cameroon (2/9 = 22%

Tupuri Tupuri (or Toupouri) is a language mostly spoken in the Mayo-Kebbi Est Region of southern Chad and in small parts of northern Cameroon. It is an Mbum language spoken by the Tupuri people with approximately 300,000 speakers. Tupuri was erroneous ...

, 4/28 = 14% Mandara, 2/17 = 12%

Fulbe The Fula, Fulani, or Fulɓe people are an ethnic group in Sahara, Sahel and West Africa, widely dispersed across the region. Inhabiting many countries, they live mainly in West Africa and northern parts of Central Africa, South Sudan, Darfur, ...

) and eastern

DRC The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo (the last ambiguously also referring to the neighbouring Republic of the Congo), is a country in Central Africa. By land area, it is t ...

(2/9 = 22% Alur, 1/18 = 6%

Hema Hema may refer to: * Hemā (mythology), a figure from Polynesian mythology * HEMA (store), a Dutch chain of stores * Hema (supermarket) (盒马), a supermarket chain in China * Hema maps, an Australian map publisher * Hema people, an ethnic grou ...

, 1/47 = 2%

Mbuti The Mbuti people, or Bambuti, are one of several indigenous pygmy groups in the Congo region of Africa. Their languages are Central Sudanic languages and Bantu languages. Subgroups Bambuti are pygmy hunter-gatherers, and are one of the oldest ...

). Haplogroup A-M91(xA-M31,A-M6,A-M32) has been observed in the Bakola people of southern Cameroon (3/33 = 9%). Without testing for any subclade, haplogroup A-L1085 has been observed in samples of several populations of

Gabon Gabon ( ; ), officially the Gabonese Republic (), is a country on the Atlantic coast of Central Africa, on the equator, bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo to the east and south, and ...

, including 9% (3/33) of a sample of

Baka Baka, baká or BAKA may refer to: Ethnicities and languages * Baka people (Cameroon and Gabon), an African ethnic group * Baka people (Congo and South Sudan), an African ethnic group * Baka language, a dialect cluster of Cameroon and Gabon * Baka ...

, 3% (1/36) of a sample of Ndumu, 2% (1/46) of a sample of

Duma A duma () is a Russian assembly with advisory or legislative functions. The term ''boyar duma'' is used to refer to advisory councils in Russia from the 10th to 17th centuries. Starting in the 18th century, city dumas were formed across Russia ...

, 2% (1/57) of a sample of Nzebi, and 2% (1/60) of a sample of Tsogo.

East Africa

Haplogroup A-M13 is common among the

Southern Sudan Southern Sudan may refer to: * the southern regions of the present-day Republic of Sudan in North Africa * South Sudan South Sudan (), officially the Republic of South Sudan, is a landlocked country in East Africa. It is bordered on the nor ...

ese (53%),28/53 (Dinka, Nuer, and Shilluk), especially the

Dinka The Dinka people () are a Nilotic ethnic group native to South Sudan. The Dinka mostly live along the Nile, from Mangalla-Bor to Renk, in the region of Bahr el Ghazal, Upper Nile (two out of three provinces that were formerly part of southern ...

(61.5%). Haplogroup A-M13 also has been observed in another sample of a South

Sudan Sudan, officially the Republic of the Sudan, is a country in Northeast Africa. It borders the Central African Republic to the southwest, Chad to the west, Libya to the northwest, Egypt to the north, the Red Sea to the east, Eritrea and Ethiopi ...

ese population at a frequency of 45% (18/40), including 1/40 A-M171. Haplogroup A also has been reported in 14.6% (7/48) of an

Amhara Amhara may refer to: * Amhara people, an ethnic group of Ethiopia * Amharic, a language spoken by the Amhara people * Bete Amhara, a lordship and later province of medieval Ethiopia * Amhara Province, a historical region of Ethiopia * Amhara Region ...

sample, 10.3% (8/78) of an

Oromo Oromo may refer to: * Oromo people, an ethnic group of Ethiopia and Kenya * Oromo language, an Afroasiatic language See also * *Orma (clan), Oromo tribe *Oromia Oromia (, ) is a Regions of Ethiopia, regional state in Ethiopia and the homelan ...

sample, 13.6% (12/88) of another sample from Ethiopia, and 41% of a sample of the

Beta Israel Beta Israel, or Ethiopian Jews, is a Jewish group originating from the territory of the Amhara Region, Amhara and Tigray Region, Tigray regions in northern Ethiopia, where they are spread out across more than 500 small villages over a wide ter ...

(Cruciani et al. 2002), and important percentages are also shared by Bantus in Kenya (14%, Luis et al. 2004) and Iraqw in Tanzania (3/43 = 7.0% (Luis et al. 2004) to 1/6 = 17% (Knight et al. 2003)).

North Africa

The subclade A1 has been observed in Libyan Berbers, while the subclade A-M13 has been observed in approximately 3% of

Egyptian ''Egyptian'' describes something of, from, or related to Egypt. Egyptian or Egyptians may refer to: Nations and ethnic groups * Egyptians, a national group in North Africa ** Egyptian culture, a complex and stable culture with thousands of year ...

males.

Southern Africa

One study has found haplogroup A in samples of various

Khoisan Khoisan ( ) or () is an Hypernymy and hyponymy, umbrella term for the various Indigenous peoples of Africa, indigenous peoples of Southern Africa who traditionally speak non-Bantu languages, combining the Khoekhoen and the San people, Sān peo ...

-speaking groups with frequency ranging from 10% to 70%. This particular haplogroup was not found in a sample of the

Hadzabe The Hadza, or Hadzabe (''Wahadzabe'', in Swahili), are a protected hunter-gatherer Tanzanian indigenous ethnic group, primarily based in Baray, an administrative ward within Karatu District in southwest Arusha Region. They live around the Lake E ...

from Tanzania, a population occasionally grouped with other Khoisan groups due to the presence of

click consonant Click consonants, or clicks, are speech sounds that occur as consonants in many languages of Southern Africa and in three languages of East Africa. Examples familiar to English-speakers are the '' tut-tut'' (British spelling) or '' tsk! tsk!' ...

s in their language, but whose language was thoroughly demonstrated to be an isolate as unrelated to them as other languages by work by linguist Bonny Sands.

Europe

Haplogroup A has been observed as A1 in European men in England. A Y chromosome has been observed also with low frequency in Asia Minor, in the Middle East and in some Mediterranean islands, among Aegean Greeks, Sicilians (0.2% of A1a in Capo d’Orlando and 0.5% of A1b in all the

island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...

), Palestinians, Jordanians and Yemenites. Without testing for any subclade, haplogroup A1b has been observed in a sample of Greeks from Mitilini on the Aegean island of

Lesvos Lesbos or Lesvos ( ) is a Greek island located in the northeastern Aegean Sea. It has an area of , with approximately of coastline, making it the third largest island in Greece and the eighth largest in the Mediterranean. It is separated from A ...

and A1b has been observed also on 0.1% of

Iberian Jewish Spanish and Portuguese Jews, also called Western Sephardim, Iberian Jews, or Peninsular Jews, are a distinctive sub-group of Sephardic Jews who are largely descended from Jews who lived as New Christians in the Iberian Peninsula during the fe ...

. The authors of one study have reported finding what appears to be haplogroup A in 3.1% (2/65) of a sample of Cypriots, though they have not definitively excluded the possibility that either of these individuals may belong to haplogroup B.

Subclade distribution

A-V148* (A0)*)

A-V148 is one of two primary branches in A0-T.

A-P305* (A1*)

Haplogroup A-P305* is largely restricted to parts of

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

, though a handful of cases have been reported in

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

and

Western Asia West Asia (also called Western Asia or Southwest Asia) is the westernmost region of Asia. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian ...

. A-P305 is found at its highest rates in Bakola Pygmies (South

Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...

) at 8.3% and

Berbers Berbers, or the Berber peoples, also known as Amazigh or Imazighen, are a diverse grouping of distinct ethnic groups indigenous to North Africa who predate the arrival of Arab migrations to the Maghreb, Arabs in the Maghreb. Their main connec ...

from

Algeria Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. It is bordered to Algeria–Tunisia border, the northeast by Tunisia; to Algeria–Libya border, the east by Libya; to Alger ...

at 1.5% and in

Ghana Ghana, officially the Republic of Ghana, is a country in West Africa. It is situated along the Gulf of Guinea and the Atlantic Ocean to the south, and shares borders with Côte d’Ivoire to the west, Burkina Faso to the north, and Togo to t ...

. The clade also achieves high frequencies in the

Bushmen The San peoples (also Saan), or Bushmen, are the members of any of the indigenous hunter-gatherer cultures of southern Africa, and the Indigenous peoples of Africa, oldest surviving cultures of the region. They are thought to have diverged fro ...

hunter-gatherer A hunter-gatherer or forager is a human living in a community, or according to an ancestrally derived Lifestyle, lifestyle, in which most or all food is obtained by foraging, that is, by gathering food from local naturally occurring sources, esp ...

populations of

Southern Africa Southern Africa is the southernmost region of Africa. No definition is agreed upon, but some groupings include the United Nations geoscheme for Africa, United Nations geoscheme, the intergovernmental Southern African Development Community, and ...

, followed closely by many

Nilotic The Nilotic peoples are peoples Indigenous people of Africa, indigenous to South Sudan and the Nile Valley who speak Nilotic languages. They inhabit South Sudan and the Gambela Region of Ethiopia, while also being a large minority in Kenya, Uga ...

groups in

Eastern Africa East Africa, also known as Eastern Africa or the East of Africa, is a region at the eastern edge of the Africa, African continent, distinguished by its unique geographical, historical, and cultural landscape. Defined in varying scopes, the regi ...

. However, haplogroup A's oldest sub-clades are exclusively found in Central-

Northwest Africa The Maghreb (; ), also known as the Arab Maghreb () and Northwest Africa, is the western part of the Arab world. The region comprises western and central North Africa, including Algeria, Libya, Mauritania, Morocco, and Tunisia. The Maghreb al ...

, where it, and consequently Y-chromosomal Adam, is believed to have originated about 140,000 years ago. The clade has also been observed at notable frequencies in certain populations in

Ethiopia Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Ken ...

, as well as some

Pygmy In anthropology, pygmy peoples are ethnic groups whose average height is unusually short. The term pygmyism is used to describe the phenotype of endemic short stature (as opposed to disproportionate dwarfism occurring in isolated cases in a po ...

groups in Central Africa. Haplogroup A-L1085 is less common among Niger–Congo speakers, who largely belong to the

E1b1a 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, Haplogroup E-M329, E-M329 and Haplogroup E-M2, E-M2. E-M329 is a subclade mostly foun ...

clade. Haplogroup E in general is believed to have originated in Northeast Africa, and was later introduced to

West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...

from where it spread around 5,000 years ago to Central, Southern and Southeastern Africa with the

Bantu expansion Bantu may refer to: * Bantu languages, constitute the largest sub-branch of the Niger–Congo languages * Bantu peoples, over 400 peoples of Africa speaking a Bantu language * Bantu knots, a type of African hairstyle * Black Association for Natio ...

. According to Wood et al. (2005) and Rosa et al. (2007), such relatively recent population movements from West Africa changed the pre-existing population Y chromosomal diversity in Central, Southern and Southeastern Africa, replacing the previous haplogroups in these areas with the now dominant E1b1a lineages. Traces of ancestral inhabitants, however, can be observed today in these regions via the presence of the Y DNA haplogroups A-M91 and B-M60 that are common in certain relict populations, such as the

Pygmies and the

. In a composite sample of 3551 African men, Haplogroup A had a frequency of 5.4%. The highest frequencies of haplogroup A have been reported among the

of Southern Africa,

, and

Nilo-Saharans The Nilo-Saharan languages are a proposed family of around 210 African languages spoken by somewhere around 70 million speakers, mainly in the upper parts of the Chari and Nile rivers, including historic Nubia, north of where the two tributarie ...

A-M31

The subclade A-M31 has been found in approximately 2.8% (8/282) of a pool of seven samples of various ethnic groups in

Guinea-Bissau Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa that covers with an estimated population of 2,026,778. It borders Senegal to Guinea-Bissau–Senegal border, its north and Guinea to Guinea–Guinea-Bissau b ...

, especially among the Papel-Manjaco-Mancanha (5/64 = 7.8%). An earlier study, Gonçalves et al. 2003, reported finding A-M31 in 5.1% (14/276) of a sample from Guinea-Bissau and in 0.5% (1/201) of a pair of samples from

Cabo Verde Cape Verde or Cabo Verde, officially the Republic of Cabo Verde, is an island country and archipelagic state of West Africa in the central Atlantic Ocean, consisting of ten volcanic islands with a combined land area of about . These islands ...

. The authors of another study have reported finding haplogroup A-M31 in 5% (2/39) of a sample of

Mandinka Mandinka, Mandika, Mandinkha, Mandinko, or Mandingo may refer to: Media * Mandingo (novel), ''Mandingo'' (novel), a bestselling novel published in 1957 * Mandingo (film), ''Mandingo'' (film), a 1975 film based on the eponymous 1957 novel * ''Man ...

from

Senegambia The Senegambia (other names: Senegambia region or Senegambian zone,Barry, Boubacar, ''Senegambia and the Atlantic Slave Trade'', (Editors: David Anderson, Carolyn Brown; trans. Ayi Kwei Armah; contributors: David Anderson, American Council of Le ...

and 2% (1/55) of a sample of

Dogon Dogon may refer to: *Dogon people, an ethnic group living in the central plateau region of Mali, in West Africa *Dogon languages The Dogon languages are a small closely related language family that is spoken by the Dogon people of Mali and may ...

from

Mali Mali, officially the Republic of Mali, is a landlocked country in West Africa. It is the List of African countries by area, eighth-largest country in Africa, with an area of over . The country is bordered to the north by Algeria, to the east b ...

. Haplogroup A-M31 also has been found in 3% (2/64) of a sample of

from

Morocco Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...

and 2.3% (1/44) of a sample of unspecified ethnic affiliation from

. At least seven men with ancestral origins in

Yorkshire Yorkshire ( ) is an area of Northern England which was History of Yorkshire, historically a county. Despite no longer being used for administration, Yorkshire retains a strong regional identity. The county was named after its county town, the ...

England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

, and sharing the distinctive surname Revis, have been identified as belonging to subclade A-M31. News reports suggested that the men were phenotypically "European" and unaware of any African ancestry. Subsequent research suggested that they shared a common patrilineal ancestor in the 18th century.
News article:

A-M6

A-M6 (formerly A2) is typically found among Khoisan peoples. The authors of one study have reported finding haplogroup A-M6(xA-P28) in 28% (8/29) of a sample of Tsumkwe San and 16% (5/32) of a sample of !Kung/Sekele, and haplogroup A-P28 in 17% (5/29) of a sample of Tsumkwe San, 9% (3/32) of a sample of !Kung/Sekele, 9% (1/11) of a sample of Nama, and 6% (1/18) of a sample of Dama. The authors of another study have reported finding haplogroup A-M6 in 15.4% (6/39) of a sample of Khoisan males, including 5/39 A-M6(xA-M114) and 1/39 A-M114.

A-M32

The clade A-M32 (formerly A3) contains the most populous branches of haplogroup A-L1085 and is mainly found in

and

A-M28

The subclade A-M28 (formerly A3a) has only been rarely observed in the

Horn of Africa The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...

. In 5% (1/20) of a mixed sample of speakers of

South Semitic languages South Semitic is a putative branch of the Semitic languages, which form a branch of the larger Afro-Asiatic language family, found in (North and East) Africa and Western Asia. The grouping is controversial and several alternate classifications ...

from Ethiopia, 1.1% (1/88) of a sample of Ethiopians, and 0.5% (1/201) in Somalis.

A-M51

The subclade A-M51 (formerly A3b1) occurs most frequently among Khoisan peoples (6/11 = 55% Nama, 11/39 = 28% Khoisan, 7/32 = 22% !Kung/Sekele, 6/29 = 21% Tsumkwe San, 1/18 = 6% Dama). However, it also has been found with lower frequency among

Bantu peoples The Bantu peoples are an Indigenous peoples of Africa, indigenous ethnolinguistic grouping of approximately 400 distinct native Demographics of Africa, African List of ethnic groups of Africa, ethnic groups who speak Bantu languages. The language ...

, including 2/28 = 7%

Sotho–Tswana The Sotho-Tswana, also known as the Sotho or Basotho, although the term is now closely associated with the Southern Sotho peoples are a meta-ethnicity of Southern Africa. They are a large and diverse group of people who speak Sotho-Tswana l ...

, 3/53 = 6% non-Khoisan Southern Africans, 4/80 = 5%

Xhosa Xhosa may refer to: * Xhosa people, a nation, and ethnic group, who live in south-central and southeasterly region of South Africa * Xhosa language, one of the 11 official languages of South Africa, principally spoken by the Xhosa people See als ...

, and 1/29 = 3% Zulu.

A-M13

The subclade A-M13 (formerly A3b2) that is commonly found in East Africa and northern Cameroon is different from those found in the Khoisan samples and only remotely related to them. This finding suggests an ancient divergence. In

, haplogroup A-M13 has been found in 28/53 = 52.8% of

ese, 13/28 = 46.4% of the

Nuba The Nuba people are indigenous inhabitants of southern Sudan. The Nuba are made up of 50 various indigenous ethnic groups who inhabit the Nuba Mountains of South Kordofan, South Kordofan state in Sudan, encompassing multiple distinct people that ...

of central Sudan, 25/90 = 27.8% of Western Sudanese, 4/32 = 12.5% of local

Hausa people The Hausa (Endonym, autonyms for singular: Bahaushe (male, m), Bahaushiya (female, f); plural: Hausawa and general: Hausa; exonyms: Ausa; Ajami script, Ajami: ) are a native ethnic group in West Africa. They speak the Hausa language, which is the ...

, and 5/216 = 2.3% of Northern Sudanese.Hisham Y. Hassan ''et al.'' (2008). "Southern Sudanese" includes 26 Dinka, 15 Shilluk, and 12 Nuer. "Western Sudanese" includes 26 Borgu, 32 Masalit, and 32 Fur. "Northern Sudanese" includes 39 Nubians, 42 Beja, 33 Copts, 50 Gaalien, 28 Meseria, and 24 Arakien. In

, one study has reported finding haplogroup A-M13 in 14.6% (7/48) of a sample of

and 10.3% (8/78) of a sample of

. Another study has reported finding haplogroup A-M118 in 6.8% (6/88) and haplogroup A-M13(xA-M171, A-M118) in 5.7% (5/88) of a mixed sample of Ethiopians, amounting to a total of 12.5% (11/88) A-M13. Haplogroup A-M13 also has been observed occasionally outside of Central and Eastern Africa, as in the

Aegean Region The Aegean region () is one of the 7 Geographical regions of Turkey, geographical regions of Turkey. The largest city in the region is İzmir. Other big cities are Manisa, Aydın, Denizli, Muğla, Afyonkarahisar and Kütahya. Located in w ...

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

(2/30 = 6.7%),

Yemenite Jews Yemenite Jews, also known as Yemeni Jews or Teimanim (from ; ), are a Jewish diaspora group who live, or once lived, in Yemen, and their descendants maintaining their customs. After several waves of antisemitism, persecution, the vast majority ...

(1/20 = 5%),

Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...

(4/147 = 2.7%, 3/92 = 3.3%),

Palestinian Arabs Palestinians () are an Arab ethnonational group native to the Levantine region of Palestine. *: "Palestine was part of the first wave of conquest following Muhammad's death in 632 CE; Jerusalem fell to the Caliph Umar in 638. The indigenous p ...

(2/143 = 1.4%),

Sardinia Sardinia ( ; ; ) is the Mediterranean islands#By area, second-largest island in the Mediterranean Sea, after Sicily, and one of the Regions of Italy, twenty regions of Italy. It is located west of the Italian Peninsula, north of Tunisia an ...

(1/77 = 1.3%, 1/22 = 4.5%), the capital of

Jordan Jordan, officially the Hashemite Kingdom of Jordan, is a country in the Southern Levant region of West Asia. Jordan is bordered by Syria to the north, Iraq to the east, Saudi Arabia to the south, and Israel and the occupied Palestinian ter ...

Amman Amman ( , ; , ) is the capital and the largest city of Jordan, and the country's economic, political, and cultural center. With a population of four million as of 2021, Amman is Jordan's primate city and is the largest city in the Levant ...

(1/101=1%), and

Oman Oman, officially the Sultanate of Oman, is a country located on the southeastern coast of the Arabian Peninsula in West Asia and the Middle East. It shares land borders with Saudi Arabia, the United Arab Emirates, and Yemen. Oman’s coastline ...

(1/121 = 0.8%).

Phylogenetics

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.

Cruciani 2011

A major shift in understanding of the Haplogroup ''A'' tree came with the publication of . Initial sequencing of the human y-chromosome suggested that first split in the Y-Chromosome family tree occurred with the M91 mutation that separated Haplogroup A from

Haplogroup BT Haplogroup BT M91, also known as Haplogroup A1b2 (and formerly as A4, BR and BCDEF), is a Y-chromosome haplogroup. BT is a subclade of haplogroup A1b (P108) and a sibling of the haplogroup A1b1 (L419/PF712). Ancient DNA Later Stone Age individu ...

. However, it is now known that deepest split in the Y-chromosome tree is found between two previously reported subclades of Haplogroup A, rather than between Haplogroup A and Haplogroup BT. Subclades A1b and A1a-T now descend directly from the root of the tree. The rearrangement of the Y-chromosome family tree implies that lineages classified as Haplogroup A do not necessarily form a

monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ...

clade. Haplogroup A therefore refers to a collection of lineages that do not possess the markers that define Haplogroup BT, though many lineages within haplogroup A are only very distantly related. The M91 and P97 mutations distinguish Haplogroup A from

. Within Haplogroup A chromosomes, the M91 marker consists of a stretch of 8 T nucleobase units. In Haplogroup BT and chimpanzee chromosomes, this marker consists of 9 T nucleobase units. This pattern suggested that the 9T stretch of Haplogroup BT was the ancestral version and that Haplogroup A was formed by the deletion of one

nucleobase Nucleotide bases (also nucleobases, nitrogenous bases) are nitrogen-containing biological compounds that form nucleosides, which, in turn, are components of nucleotides, with all of these monomers constituting the basic building blocks of nuc ...

. But according to Cruciani et al. 2011, the region surrounding the M91 marker is a mutational hotspot prone to recurrent mutations. It is therefore possible that the 8T stretch of Haplogroup A may be the ancestral state of M91 and the 9T of

may be the derived state that arose by an

insertion Insertion may refer to: *Insertion (anatomy), the point of a tendon or ligament onto the skeleton or other part of the body *Insertion (genetics), the addition of DNA into a genetic sequence *Insertion, several meanings in medicine, see ICD-10-PCS ...

of 1T. This would explain why subclades A1b and A1a-T, the deepest branches of Haplogroup A, both possess the 8T stretch. Furthermore, Cruciani et al. 2011 determined that the P97 marker, which is also used to identify haplogroup A, possessed the ancestral state in haplogroup A but the derived state in

Phylogenetic trees

This phylogenetic tree of haplogroup subclades is based on the Y-Chromosome Consortium (YCC) Tree, the ISOGG Y-DNA Haplogroup Tree, and subsequent published research. Y-chromosomal Adam *A0 (formerly A1b) (P305, V148, V149, V154, V164, V166, V172, V173, V177, V190, V196, V223, V225, V229, V233, V239) *A1 (A1a-T according to Cruciani 2011) (L985, L989, L990, L1002, L1003, L1004, L1009, L1013, L1053, V161, V168, V171, V174, V203, V238, V241, V250, V238, V241, V250) **A1a (M31, P82, V4, V14, V15, V25, V26, V28, V30, V40, V48, V53, V57, V58, V63, V76, V191, V201, V204, V214, V215, V236) **A1b (A2-T according to Cruciani 2011) (P108, V221) ***A1b1 (L419) **** A1b1a (V50, V82, V198, V224) ***** A1b1a1 formerly A2 (M14, M23, L968/M29/P3/PN3, M71, M135, M141, M206, M276/P247, M277/P248, MEH1, P4, P5, P36.1, Page71, Page87, Page95) ****** A1b1a1a (M6, M196) ******* A1b1a1a1 (M212) ******** A1b1a1a1a formerly A2a (M114) ******** A1b1a1a1b formerly A2b (P28) ******** A1b1a1a1c formerly A2c (P262) **** A1b1b formerly A3 (M32) ***** A1b1b1 formerly A3a (M28, M59) ***** A1b1b2 formerly A3b (M144, M190, M220, P289) ****** A1b1b2a formerly A3b1 (M51, P100, P291) ******* A1b1b2a1 formerly A3b1a (P71, P102) ****** A1b1b2b formerly A3b2 (M13, M127, M202, M219, M305): ******* A1b1b2b1 (M118) *** BT (M42, M94, M139, M299, M60, M181/Page32, P85, P90, P97, Page65.1/SRY1532.1/SRY10831.1, V21, V29, V31, V59, V64, V102, V187, V202, V216, V235)

References

Sources for conversion tables

* * * * * * * * {{refend A-L1085 Human haplogroups Human population genetics

Origin

Geographical distribution

Central Africa

East Africa

North Africa

Southern Africa

Europe

Subclade distribution

A-V148* (A0)*)

A-P305* (A1*)

A-M31

A-M6

A-M32

A-M28

A-M51

A-M13

Phylogenetics

Phylogenetic history

Original research publications

Cruciani 2011

Phylogenetic trees

See also

Genetics

Y-DNA A subclades

Y-DNA backbone tree

References

Sources for conversion tables