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In human genetics, the Y-chromosomal most recent common ancestor is the patrilineal most recent common ancestor (MRCA) from whom all currently living humans are descended. He is the most recent male from whom all living humans are descended through an unbroken line of their male ancestors. The term Y-MRCA reflects the fact that the Y chromosomes of all currently living human males are directly derived from the Y chromosome of this remote ancestor. The analogous concept of the matrilineal most recent common ancestor is known as "Mitochondrial Eve", the most recent woman from whom all living humans are descended matrilineally. As with "Mitochondrial Eve", the title of "Y-chromosomal Adam" is not permanently fixed to a single individual, but can advance over the course of human history as paternal lineages become extinct.
E-M215 or E1b1b, formerly known as E3b, is a major human Y-chromosome DNA haplogroup. E-M215 has two basal branches, E-M35 and E-M281. E-M35 is primarily distributed in North Africa and the Horn of Africa, and occurs at moderate frequencies in the Middle East, Europe, and Southern Africa. E-M281 occurs at a low frequency in Ethiopia.
Haplogroup A is a human Y-chromosome DNA haplogroup, which includes all living human Y chromosomes. Bearers of extant sub-clades of haplogroup A are almost exclusively found in Africa, in contrast with haplogroup BT, bearers of which participated in the Out of Africa migration of early modern humans. The known branches of haplogroup A are A00, A0, A1a, and A1b1; these branches are only very distantly related, and are not more closely related to each other than they are to haplogroup BT.
Haplogroup B (M60) is a human Y-chromosome DNA haplogroup common to paternal lineages in Africa. It is a primary branch of the haplogroup BT.
Haplogroup E-M96 is a human Y-chromosome DNA haplogroup. It is one of the two main branches of the older and ancestral haplogroup DE, the other main branch being haplogroup D. The E-M96 clade is divided into two main subclades: the more common E-P147, and the less common E-M75.
The Nara are an ethnic group inhabiting southwestern Eritrea. The society is divided into four subtribes, who are traditionally animist. They are mostly subsistence farmers.
E-M35, also known as E1b1b1-M35, is a human Y-chromosome DNA haplogroup. E-M35 has two basal branches, E-V68 and E-Z827. E-V68 and E-Z827 are primarily distributed in North Africa and the Horn of Africa, and occur at lower frequencies in the Middle East, Europe, and Southern Africa.
Haplogroup R1b (R-M343), previously known as Hg1 and Eu18, is a human Y-chromosome haplogroup.
Haplogroup E-M132, formerly known as E-M33 (E1a), is a human Y-chromosome DNA haplogroup. Along with E-P177, it is one of the two main branches of the older E-P147 paternal clade. E-M132 is divided into two primary sub-branches, E-M44 and E-Z958, with many descendant subclades.
Haplogroup E-M75 is a human Y-chromosome DNA haplogroup. Along with haplogroup E-P147, it is one of the two main branches of the older haplogroup E-M96.
Haplogroup E-V68, also known as E1b1b1a, is a major human Y-chromosome DNA haplogroup found in North Africa, the Horn of Africa, Western Asia and Europe. It is a subclade of the larger and older haplogroup, known as E1b1b or E-M215. The E1b1b1a lineage is identified by the presence of a single nucleotide polymorphism (SNP) mutation on the Y chromosome, which is known as V68. It is a subject of discussion and study in genetics as well as genetic genealogy, archaeology, and historical linguistics.
Haplogroup E-P2, also known as E1b1, is a human Y-chromosome DNA haplogroup. E-P2 has two basal branches, E-V38 and E-M215. E-P2 had an ancient presence in East Africa and the Levant; presently, it is primarily distributed in Africa where it may have originated, and occurs at lower frequencies in the Middle East and Europe.
E-Z827, also known as E1b1b1b, is a major human Y-chromosome DNA haplogroup. It is the parent lineage to the E-Z830 and E-V257 subclades, and defines their common phylogeny. The former is predominantly found in the Middle East; the latter is most frequently observed in North Africa, with its E-M81 subclade observed among the ancient Guanche natives of the Canary Islands. E-Z827 is also found at lower frequencies in Europe, and in isolated parts of Southeast Africa.
Moroccan genetics encompasses the genetic history of the people of Morocco, and the genetic influence of this ancestry on world populations. It has been heavily influenced by geography.
The genetic history of Egypt reflects its geographical location at the crossroads of several major biocultural areas: North Africa, the Sahara, the Middle East, the Mediterranean and sub-Saharan Africa.
Haplogroup A-L1085, also known as haplogroup A0-T is a human Y-DNA haplogroup. It is part of the paternal lineage of almost all humans alive today. The SNP L1085 has played two roles in population genetics: firstly, most Y-DNA haplogroups have diverged from it and; secondly, it defines the undiverged basal clade A-L1085*.
Haplogroup E-M329, also known as E1b1a2, is a human Y-chromosome DNA haplogroup. E-M329 is mostly found in East Africa.
Haplogroup E-M2, also known as E1b1a1-M2, is a human Y-chromosome DNA haplogroup. E-M2 is primarily distributed within Africa followed by West Asia. More specifically, E-M2 is the predominant subclade in West Africa, Central Africa, Southern Africa, and the region of the African Great Lakes; it also occurs at moderate frequencies in North Africa, and the Middle East. E-M2 has several subclades, but many of these subhaplogroups are included in either E-L485 or E-U175. E-M2 is especially common among indigenous Africans who speak Niger-Congo languages, and was spread to Southern Africa and East Africa through the Bantu expansion.
The human Y-chromosome haplogroup E-V12 is a subclade of E-M78, which in turn is part of the larger haplogroup E1b1b1. According to Cruciani et al. (2007), the E-V12 sublineage likely originated in Northern Africa. It has two main branches: E-V32 which is most common in the somalia and Arabian peninsula, and E-CTS693 which is most common in Upper Egypt and to a lesser extent in Sudan. E-CTS693 is also scattered in low frequencies across the Levant, Anatolia, the Central Sahel, the African Great Lakes region, and Europe.
The genetic history of Africa summarizes the genetic makeup and population history of African populations in Africa, composed of the overall genetic history, including the regional genetic histories of North Africa, West Africa, East Africa, Central Africa, and Southern Africa, as well as the recent origin of modern humans in Africa. The Sahara served as a trans-regional passageway and place of dwelling for people in Africa during various humid phases and periods throughout the history of Africa. It also served as a biological barrier that restricted geneflow between the northern and central parts of Africa since its desertification, contributing to the diverse and distinct population structures on the continent. Nonetheless, this did not stop contact between peoples north and south of the Sahara at various points, especially in prehistoric times when the climate conditions were warmer and wetter.
References
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Wood, Elizabeth T et al 2005 Contrasting patterns of Y chromosome and mtDNA variation in Africa: evidence for sex-biased demographic processes. Eur J Hum Genet 13, 867–876 (2005). https://doi.org/10.1038/sj.ejhg.5201408
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Hassan, Hisham Y. et al. 2008 Y-Chromosome Variation Among Sudanese: Restricted Gene Flow, Concordance With Language, Geography, and History, 2008
- 1 2 3 4 5 J. R. Luis et al 2004, The Levant versus the Horn of Africa: Evidence for Bidirectional Corridors of Human Migrations
- 1 2 Berniell-Lee, Gemma et al 2009 Genetic and Demographic Implications of the Bantu Expansion: Insights from Human Paternal Lineages
- 1 2 Hurles, Matthew E. et al 2005, The Dual Origin of the Malagasy in Island Southeast Asia and East Africa: Evidence from Maternal and Paternal Lineages
- 1 2 3 4 5 6 7 8 9 Tishkoff, Sarah A. et al 2007 History of Click-Speaking Populations of Africa Inferred from mtDNA and Y Chromosome Genetic Variation
- 1 2 3 Naidoo, Thijessen et al 2010, Development of a single base extension method to resolve Y chromosome haplogroups in sub-Saharan African populations
- 1 2 3 4 5 6 7 8 9 Cruciani, Fulvio et al 2002, A Back Migration from Asia to Sub-Saharan Africa Is Supported by High-Resolution Analysis of Human Y-Chromosome Haplotypes
- 1 2 3 4 Rosa Alexandra; Ornelas Carolina; Jobling Mark A; Brehm António; Villems Richard (2007). "Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective". BMC Evolutionary Biology. 7: 124. doi: 10.1186/1471-2148-7-124 . PMC 1976131 . PMID 17662131.
- 1 2 Veeramah, Krishna R; et al. (2010). "Little genetic differentiation as assessed by uniparental markers in the presence of substantial language variation in peoples of the Cross River region of Nigeria". BMC Evolutionary Biology. 10: 92. doi: 10.1186/1471-2148-10-92 . PMC 2867817 . PMID 20356404. & Supplementary material
- 1 2 Shriner, Daniel, and Charles N Rotimi. “Genetic history of Chad.” American journal of physical anthropology vol. 167,4 (2018): 804-812. doi:10.1002/ajpa.23711
- ↑ Moran CN et al 2004, Y chromosome haplogroups of elite Ethiopian endurance runners.
- 1 2 3 4 Cruciani, Fulvio et al. “Human Y chromosome haplogroup R-V88: a paternal genetic record of early mid Holocene trans-Saharan connections and the spread of Chadic languages.” European journal of human genetics : EJHG vol. 18,7 (2010): 800-7. doi:10.1038/ejhg.2009.231
- ↑ Nguidi, Masinda; Gomes, Verónica; Vullo, Carlos; Rodrigues, Pedro; Rotondo, Martina; Longaray, Micaela; Catelli, Laura; Martínez, Beatriz; Campos, Afonso; Carvalho, Elizeu; Orovboni, Victoria O.; Keshinro, Samuel O.; Simão, Filipa; Gusmão, Leonor (2024-07-08). "Impact of patrilocality on contrasting patterns of paternal and maternal heritage in Central-West Africa". Scientific Reports. 14: 15653. doi:10.1038/s41598-024-65428-z. ISSN 2045-2322. PMC 11231350 . PMID 38977763.
- ↑ Rita Gonçalves, Hélder Spínola & António Brehm (2010) Y-chromosome lineages in São Tomé e Príncipe and Cabo Verde islands: Different input of European influence. Forensic Science International: Genetics Supplement Series, Volume 1, Issue 1, August 2008, Pages 210-211
- ↑ Sánchez, Juan J et al 2005, High frequencies of Y chromosome lineages characterized by E3b1, DYS19-11, DYS392-12 in Somali males
- 1 2 3 Pereira, Luísa; Černý, Viktor; Cerezo, María; Silva, Nuno M; Hájek, Martin; Vašíková, Alžběta; Kujanová, Martina; Brdička, Radim; Salas, Antonio (August 2010). "Linking the sub-Saharan and West Eurasian gene pools: maternal and paternal heritage of the Tuareg nomads from the African Sahel". European Journal of Human Genetics. 18 (8): 915–923. doi:10.1038/ejhg.2010.21. ISSN 1018-4813. PMC 2987384 . PMID 20234393.
- ↑ International HapMap Consortium, 2005, "A haplotype map of the human genome", Nature, no. 437 (27 October), pp. 1299-1320.