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Haplogroup JT (mtDNA)
Haplogroup JT is a human mitochondrial DNA (mtDNA) haplogroup. Origin Haplogroup JT is descended from the macro-haplogroup R. It is the ancestral clade to the mitochondrial haplogroups J and T. JT (predominantly J) was found among the ancient Etruscans. The haplogroup has also been found among Iberomaurusian specimens dating from the Epipaleolithic at the Taforalt prehistoric site. One ancient individual carried a haplotype, which correlates with either the JT clade or the haplogroup H subclade H14b1 (1/9; 11%). Subclades Tree This phylogenetic tree of haplogroup JT subclades is based on the paper by Mannis van Oven and Manfred Kayser ''Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation'' and subsequent published research. *R2'JT **JT *** J *** T Health Maternally inherited ancient mtDNA variants have clear impact on the presentation of disease in a modern society. Superhaplogroup JT is an example of reduced risk of Parkinson's disease And ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwest Asia
Western Asia, West Asia, or Southwest Asia, is the westernmost subregion of the larger geographical region of Asia, as defined by some academics, UN bodies and other institutions. It is almost entirely a part of the Middle East, and includes Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian highlands, Armenian Highlands, the Levant, the island of Cyprus, the Sinai Peninsula, and partly the Caucasus, Caucasus Region (Transcaucasia). The region is considered to be separated from Africa by the Isthmus of Suez in Egypt, and separated from Europe by the waterways of the Turkish Straits and the watershed of the Greater Caucasus. Central Asia lies to its northeast, while South Asia lies to its east. Twelve seas surround the region (clockwise): the Aegean Sea, the Sea of Marmara, the Black Sea, the Caspian Sea, the Persian Gulf, the Gulf of Oman, the Arabian Sea, the Gulf of Aden, the Red Sea, the Gulf of Aqaba, the Gulf of Suez, and the Mediterranean Sea. Western Asia cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup Pre-JT (mtDNA)
Haplogroup pre-JT is a human mitochondrial DNA haplogroup (mtDNA). It is also called R2'JT. Origin Haplogroup pre-JT is a descendant of the haplogroup R. It is characterised by genetic marker at 4216. The pre-JT clade has two direct descendant lineages, haplogroup JT and haplogroup R2. Distribution Subclades Its subclade is Haplogroup JT, which further divides into Haplogroup J and Haplogroup T. Tree See also *Genealogical DNA test *Genetic genealogy *Human mitochondrial genetics *Population genetics Population genetics is a subfield of genetics that deals with genetic differences within and between populations, and is a part of evolutionary biology. Studies in this branch of biology examine such phenomena as adaptation, speciation, and pop ... References External links *Ian Logan'Mitochondrial DNA Site JT {{genetics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup J (mtDNA)
Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup. The clade derives from the haplogroup JT, which also gave rise to haplogroup T. In his book ''The Seven Daughters of Eve'', Bryan Sykes named the originator of this mtDNA haplogroup ''Jasmine''. Within the field of medical genetics, certain polymorphisms specific to haplogroup J have been associated with Leber's hereditary optic neuropathy. as well as Sudanese Copts (10.3% J1a; 10.3% J2), Sudanese Fulani (10.7% J1b), Meseria (6.7% J1b), Arakien (5.9% J1b), Egyptians (5.9%), Mozabite Berbers (3.53%), Sudanese Hausa (2.9% J1b), Zenata Berbers (2.74%), Beja (2.1% J1b), and Reguibate Sahrawi (0.93%). Within Europe, >2% frequency distribution of mtDNA J is as follows: *J* = Ireland — 12%, England-Wales — 11%, Scotland — 9%, Orkney — 8%, Germany — 7%, Russia (European) — 7%, Iceland — 7%, Austria-Switzerland — 5%, Finland-Estonia — 5%, Spain-Portugal — 4%, France-Italy — 3% *J1a = Austria-S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup T (mtDNA)
Haplogroup T is a human mitochondrial DNA (mtDNA) haplogroup. It is believed to have originated around 25,100 years ago in the Near East. Origins Mitochondrial clade T derives from the haplogroup JT, which also gave rise to the mtDNA haplogroup J. The T maternal clade is thought to have emanated from the Near East . Distribution The basal haplogroup T* is found among Algerians in Oran (1.67%) and Reguibate Sahrawi (0.93%).S5 Table/ref> It is also distributed among the Soqotri (1.2%). Haplogroup T is present at low frequencies throughout Western and Central Asia and Europe, with varying degrees of prevalence and certainly might have been present in other groups from the surrounding areas. T is found in approximately 10% of native Europeans. It is also common among modern day Iranians. Based on a sample of over 400 modern day Iranians , the T haplogroup represents roughly 8.3% of the population (about 1 out of 12 individuals), with the more specific T1 subtype constitutin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Mitochondrial DNA Haplogroup
In human genetics, a human mitochondrial DNA haplogroup is a haplogroup defined by differences in human mitochondrial DNA. Haplogroups are used to represent the major branch points on the mitochondrial phylogenetic tree. Understanding the evolutionary path of the female lineage has helped population geneticists trace the matrilineal inheritance of modern humans back to human origins in Africa and the subsequent spread around the globe. The letter names of the haplogroups (not just mitochondrial DNA haplogroups) run from A to Z. As haplogroups were named in the order of their discovery, the alphabetical ordering does not have any meaning in terms of actual genetic relationships. The hypothetical woman at the root of all these groups (meaning just the mitochondrial DNA haplogroups) is the matrilineal most recent common ancestor (MRCA) for all currently living humans. She is commonly called Mitochondrial Eve. The rate at which mitochondrial DNA mutates is known as the mitochon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup R (mtDNA)
Haplogroup R is a widely distributed human mitochondrial DNA (mtDNA) haplogroup. Haplogroup R is associated with the peopling of Eurasia after about 70,000 years ago, and is distributed in modern populations throughout the world outside of sub-Saharan Africa. Haplogroup R is a descendant of the macro- haplogroup N. Among the R clade's descendant haplogroups are B, U (and thus K), F, R0 (and thus HV, H, and V), and JT (the ancestral haplogroup of J and T). Origin Soares et al. (2009) estimate the age of haplogroup R at roughly 50,000 to 70,000 years ago. This is consistent with an emergence in the course of the Coastal Migration out of East Africa to West, South and Southeast Asia. It has been suggested that the early lineage of haplogroups M, N and R along the coastal route during the period of roughly 70,000 to 60,000 years ago. Haplogroup R has wide diversity and antiquity in the indigenous population of South Asia. Tribes and castes of Western and Southern I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etruscans
The Etruscan civilization () was developed by a people of Etruria in ancient Italy with a common language and culture who formed a federation of city-states. After conquering adjacent lands, its territory covered, at its greatest extent, roughly what is now Tuscany, western Umbria, and northern Lazio, as well as what are now the Po Valley, Emilia-Romagna, south-eastern Lombardy, southern Veneto, and western Campania. The earliest evidence of a culture that is identifiably Etruscan dates from about 900BC. This is the period of the Iron Age Villanovan culture, considered to be the earliest phase of Etruscan civilization, which itself developed from the previous late Bronze Age Proto-Villanovan culture in the same region. Etruscan civilization endured until it was assimilated into Roman society. Assimilation began in the late 4thcenturyBC as a result of the Roman–Etruscan Wars; it accelerated with the grant of Roman citizenship in 90 BC, and became complete in 27 BC, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iberomaurusian
The Iberomaurusian is a backed bladelet lithic industry found near the coasts of Morocco, Algeria, and Tunisia. It is also known from a single major site in Libya, the Haua Fteah, where the industry is locally known as the Eastern Oranian.The "Western Oranian" would refer to the Iberomaurusian in Morocco, Algeria, and Tunisia, but this expression is seldom used. The Iberomaurusian seems to have appeared around the time of the Last Glacial Maximum (LGM), somewhere between c. 25,000 and 23,000 cal BP. It would have lasted until the early Holocene c. 11,000 cal BP. The name of the Iberomaurusian means "of Iberia and Mauretania", the latter being a Latin name for Northwest Africa. Pallary (1909) coined this termPallary, P., 1909. Instructions pour la recherche préhistorique dans le Nord-Ouest de l'Afrique, Algiers. to describe assemblages from the site of La Mouillah in the belief that the industry extended over the strait of Gibraltar into the Iberian peninsula. This theory is n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epipaleolithic
In archaeology, the Epipalaeolithic or Epipaleolithic (sometimes Epi-paleolithic etc.) is a period occurring between the Upper Paleolithic and Neolithic during the Stone Age. Mesolithic also falls between these two periods, and the two are sometimes confused or used as synonyms. More often, they are distinct, referring to approximately the same period of time in different geographic areas. Epipaleolithic always includes this period in the Levant and, often, the rest of the Near East. It sometimes includes parts of Southeast Europe, where Mesolithic is much more commonly used. Mesolithic very rarely includes the Levant or the Near East; in Europe, Epipalaeolithic is used, though not very often, to refer to the early Mesolithic. The Epipalaeolithic has been defined as the "final Upper Palaeolithic industries occurring at the end of the final glaciation which appear to merge technologically into the Mesolithic". The period is generally dated from BP to 10,000 BP in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taforalt
Taforalt or Grotte des Pigeons is a cave in the province of Berkane, Aït Iznasen region, Morocco, possibly the oldest cemetery in North Africa (Humphrey ''et al.'' 2012). It contained at least 34 Iberomaurusian adolescent and adult human skeletons, as well as younger ones, from the Upper Palaeolithic between 15,100 and 14,000 calendar years ago. There is archaeological evidence for Iberomaurusian occupation at the site between 23,200 and 12,600 calendar years ago, as well as evidence for Aterian occupation as old as 85,000 years. Site description La Grotte des Pigeons is a cave in eastern Morocco near the village of Taforalt. Human occupation and natural processes in the cave have produced a thick sequence of archaeological layers dating between at least 85,000 and 10,000 years ago. These occupation layers include pre-Mousterian, Aterian, and Iberomaurusian lithic industries, plus an unusual non-Levallois industry between the Aterian and the Iberomaurusian dating to c. 24,500 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup H (mtDNA)
Haplogroup H is a human mitochondrial DNA (mtDNA) haplogroup. The clade is believed to have originated in Southwest Asia, near present day Syria, around 20,000 to 25,000 years ago. Mitochondrial haplogroup H is today predominantly found in Europe, and is believed to have evolved before the Last Glacial Maximum (LGM). It first expanded in the northern Near East and Southern Caucasus soon, and later migrations from Iberia suggest that the clade reached Europe before the Last Glacial Maximum. The haplogroup has also spread to parts of Africa, Siberia and inner Asia. Today, around 40% of all maternal lineages in Europe belong to haplogroup H. Origin Haplogroup H is a descendant of haplogroup HV. The Cambridge Reference Sequence (CRS), which until recently was the human mitochondrial sequence to which all others were compared, belongs to haplogroup H2a2a1 (human mitochondrial sequences should now be compared with the ancestral Reconstructed Sapiens Reference Sequence (RSRS)). Several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genealogical DNA Test
A genealogical DNA test is a DNA-based test used in genetic genealogy that looks at specific locations of a person's genome in order to find or verify ancestral genealogical relationships, or (with lower reliability) to estimate the ethnic mixture of an individual. Since different testing companies use different ethnic reference groups and different matching algorithms, ethnicity estimates for an individual vary between tests, sometimes dramatically. Three principal types of genealogical DNA tests are available, with each looking at a different part of the genome and being useful for different types of genealogical research: autosomal (atDNA), mitochondrial (mtDNA), and Y-DNA. Autosomal tests may result in a large number of DNA matches to both males and females who have also tested with the same company. Each match will typically show an estimated degree of relatedness, i.e., a close family match, 1st-2nd cousins, 3rd-4th cousins, etc. The furthest degree of relationship is u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
