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African Admixture In Europe
African admixture in Europe refers to the presence of human genotypes attributable to periods of human population dispersals out of Africa in the genetic history of Europe. for example, certain Y-DNA and mtDNA lineages are thought to have spread from Northeastern Africa to the Near East during the later Pleistocene, and from there to Europe with the Neolithic Revolution. More recent African admixtureprimarily Berber admixture from North Africais associated with historic migrations through the Mediterranean Sea and the Muslim conquests of the Early Middle Ages. This admixture can be found primarily in western-southern Iberian peninsula and Southern Italy and the main islands, with the highest incidence being in Sicily. Neolithic The change from hunting and gathering to agriculture during the Neolithic Revolution was a watershed in world history. The societies that first made the change to agriculture are believed to have lived in the Middle East around 10,000 BCE. Agriculture was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overview Of The Genetic Structure And Global Ancestry Inference In A Selection Of European, Near Eastern, And African Populations
Overview may refer to: * Overview article, an artícle that summarizes the current state of understanding on a topic * Overview map, generalised view of a geographic area See also * Summary (other) * Outline (list) * ''A Brief Overview'' * Overview and Scrutiny * Overview effect * * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Italy
Southern Italy ( it, Sud Italia or ) also known as ''Meridione'' or ''Mezzogiorno'' (), is a macroregion of the Italian Republic consisting of its southern half. The term ''Mezzogiorno'' today refers to regions that are associated with the people, lands or culture of the historical and cultural region that was once politically under the administration of the former Kingdoms of Naples and Sicily (officially denominated as one entity ''Regnum Siciliae citra Pharum'' and ''ultra Pharum'', i.e. "Kingdom of Sicily on the other side of the Strait" and "across the Strait") and which later shared a common organization into Italy's largest pre-unitarian state, the Kingdom of the Two Sicilies. The island of Sardinia, which had neither been part of said region nor of the aforementioned polity and had been under the rule of the Alpine House of Savoy that would eventually annex the Bourbon-led and Southern Italian Kingdom altogether, is nonetheless often subsumed into the ''Mezzogiorno'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be used to calc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morocco
Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to the east, and the disputed territory of Western Sahara to the south. Mauritania lies to the south of Western Sahara. Morocco also claims the Spanish exclaves of Ceuta, Melilla and Peñón de Vélez de la Gomera, and several small Spanish-controlled islands off its coast. It spans an area of or , with a population of roughly 37 million. Its official and predominant religion is Islam, and the official languages are Arabic and Berber; the Moroccan dialect of Arabic and French are also widely spoken. Moroccan identity and culture is a mix of Arab, Berber, and European cultures. Its capital is Rabat, while its largest city is Casablanca. In a region inhabited since the Paleolithic Era over 300,000 years ago, the first Moroccan s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ifri N'Amr Or Moussa
Ifri n'Amr Ou Moussa is an archaeological site discovered in 2005, located in the rural commune of Aït Siberne, Khémisset Province, in Western Morocco. This site has revealed burials associated with both Moroccan Early Neolithic and Bell Beaker culture. Genetics examined the remains of 7 seven individuals buried at Ifri N'Amr Ou Moussa c. 5325-4786 BC. The 2 samples of Y-DNA extracted belonged to the paternal haplogroup E-L19*, while the 5 samples of mtDNA extracted belonged to the maternal haplogroups M1b1*, U6a1b (two samples), U6a7b2 and U6a3. The paternal haplogroup E-L19* is very common in North Africa. The maternal haplogroups are associated with migrations from Eurasia into North Africa during the Upper Paleolithic. They were found to be closely related to Stone Age people buried at Taforalt, Morocco c. 15000 BC. Both the Taforalt and Ifri N'Amr ou Moussa people were found to be related to people of the Natufian culture (c. 9000 BC) and Pre-Pottery Neolithic (c. 650 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup M (mtDNA)
Haplogroup M is a human mitochondrial DNA (mtDNA) haplogroup. An enormous haplogroup spanning all the continents, the macro-haplogroup M, like its sibling the macro-haplogroup N, is a descendant of the haplogroup L3. All mtDNA haplogroups considered native outside of Africa are descendants of either haplogroup M or its sibling haplogroup N. Haplogroup M is relatively young, having a younger most recent common ancestor date than some subclades of haplogroup N such as haplogroup R. Origins There is a debate concerning the geographical origins of Haplogroup M and its sibling haplogroup N. Both lineages are thought to have been the main surviving lineages involved in the out of Africa migration (or migrations) because all indigenous lineages found outside Africa belong to haplogroup M or haplogroup N. Scientists are unsure whether the mutations that define haplogroups M and N occurred in Africa before the exit from Africa or in Asia after the exit from Africa. Determining the origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondria
A mitochondrion (; ) is an organelle found in the Cell (biology), cells of most Eukaryotes, such as animals, plants and Fungus, fungi. Mitochondria have a double lipid bilayer, membrane structure and use aerobic respiration to generate adenosine triphosphate (ATP), which is used throughout the cell as a source of chemical energy. They were discovered by Albert von Kölliker in 1857 in the voluntary muscles of insects. The term ''mitochondrion'' was coined by Carl Benda in 1898. The mitochondrion is popularly nicknamed the "powerhouse of the cell", a phrase coined by Philip Siekevitz in a 1957 article of the same name. Some cells in some multicellular organisms lack mitochondria (for example, mature mammalian red blood cells). A large number of unicellular organisms, such as microsporidia, parabasalids and diplomonads, have reduced or transformed their mitochondria into mitosome, other structures. One eukaryote, ''Monocercomonoides'', is known to have completely lost its mitocho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
