Endogamous Group
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Endogamous Group
Endogamy is the practice of marrying within a specific social group, religious denomination, caste, or ethnic group, rejecting those from others as unsuitable for marriage or other close personal relationships. Endogamy is common in many cultures and ethnic groups. Several religious and ethnic religious groups are traditionally more endogamous, although sometimes with the added dimension of requiring marital religious conversion. This permits an exogamous marriage, as the convert, by accepting the partner's religion, becomes accepted within the endogamous rules. Endogamy, as distinct from consanguinity, may result in transmission of genetic disorders, the so-called founder effect, within the relatively closed community. Adherence Endogamy can serve as a form of self-segregation; a community can use it to resist integrating and completely merging with surrounding populations. Minorities can use it to stay ethnically homogeneous over a long time as distinct communities within ...
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Social Group
In the social sciences, a social group can be defined as two or more people who interact with one another, share similar characteristics, and collectively have a sense of unity. Regardless, social groups come in a myriad of sizes and varieties. For example, a society can be viewed as a large social group. The system of behaviors and psychological processes occurring within a social group or between social groups is known as group dynamics. Definition Social cohesion approach A social group exhibits some degree of social cohesion and is more than a simple collection or aggregate of individuals, such as people waiting at a bus stop, or people waiting in a line. Characteristics shared by members of a group may include Interest (emotion), interests, Value (personal and cultural), values, Social representation, representations, ethnic or social background, and kinship ties. Kinship ties being a social bond based on common ancestry, marriage or adoption. In a similar vein, some ...
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Tristan Da Cunha
Tristan da Cunha (), colloquially Tristan, is a remote group of volcanic islands in the South Atlantic Ocean. It is the most remote inhabited archipelago in the world, lying approximately from Cape Town in South Africa, from Saint Helena and from the Falkland Islands. The territory consists of the inhabited island, Tristan da Cunha, which has a diameter of roughly and an area of ; the wildlife reserves of Gough Island and Inaccessible Island; and the smaller, uninhabited Nightingale Islands. , the main island has 250 permanent inhabitants, who all carry British Overseas Territories citizenship. The other islands are uninhabited, except for the South African personnel of a weather station on Gough Island. Tristan da Cunha is a British Overseas Territory with its own constitution. There is no airstrip on the main island; the only way of travelling in and out of Tristan is by boat, a six-day trip from South Africa. History Discovery The uninhabited islands were f ...
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Mesopotamia
Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the Fertile Crescent. Today, Mesopotamia occupies modern Iraq. In the broader sense, the historical region included present-day Iraq and Kuwait and parts of present-day Iran, Syria and Turkey. The Sumerians and Akkadians (including Assyrians and Babylonians) originating from different areas in present-day Iraq, dominated Mesopotamia from the beginning of written history () to the fall of Babylon in 539 BC, when it was conquered by the Achaemenid Empire. It fell to Alexander the Great in 332 BC, and after his death, it became part of the Greek Seleucid Empire. Later the Arameans dominated major parts of Mesopotamia (). Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BC. It has been identi ...
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Arab Tribes
The Tribes of Arabia () or Arab tribes () are the ethnic Arab tribes and clans that originated in the Arabian Peninsula. The tribes of Arabia descend from either one of the two Arab ancestors, Adnan or Qahtan. Arab tribes have historically inhabited the Arabian Peninsula, but after the spread of Islam, they began to heavily migrate and settle in other areas such as the Levant, Mesopotamia, Egypt, Sudan, the Maghreb, and Khuzestan. Today, all these areas are located in the Arab world with the exception of Khuzestan. These Arab tribes have played a role in the demographic changes in the Arab world through the increase of the Arab population, as well as the ethnic, cultural, linguistic, and genetic Arabization of the Levant and North Africa. Arab genealogical tradition The general consensus among 14th-century Arab genealogists is that Arabs are of three kinds: * Al-Arab al-Ba'ida ( ar, العرب البائدة), "The Extinct Arabs", were an ancient group of tribes of prehistory th ...
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Amish
The Amish (; pdc, Amisch; german: link=no, Amische), formally the Old Order Amish, are a group of traditionalist Anabaptist Christian church fellowships with Swiss German and Alsatian origins. They are closely related to Mennonite churches, another Anabaptist denomination. The Amish are known for simple living, plain dress, Christian pacifism, and slowness to adopt many conveniences of modern technology, with a view neither to interrupt family time, nor replace face-to-face conversations whenever possible, and a view to maintain self-sufficiency. The Amish value rural life, manual labor, humility and '' Gelassenheit'' (submission to God's will). The history of the Amish church began with a schism in Switzerland within a group of Swiss and Alsatian Mennonite Anabaptists in 1693 led by Jakob Ammann. Those who followed Ammann became known as Amish. In the second half of the 19th century, the Amish divided into Old Order Amish and Amish Mennonites; the latter do not abstain fr ...
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Alawites
The Alawis, Alawites ( ar, علوية ''Alawīyah''), or pejoratively Nusayris ( ar, نصيرية ''Nuṣayrīyah'') are an ethnoreligious group that lives primarily in Levant and follows Alawism, a sect of Islam that originated from Shia Islam. The Alawites revere Ali (Ali ibn Abi Talib), considered the first Imam of the Twelver school. The group is believed to have been founded by Ibn Nusayr during the 9th century. Ibn Nusayr was a disciple of the tenth Twelver Imam, Ali al-Hadi and of the eleventh Twelver Imam, Hasan al-Askari. For this reason, Alawites are also called ''Nusayris''. Surveys suggest Alawites represent an important portion of the Syrian population and are a significant minority in the Hatay Province of Turkey and northern Lebanon. There is also a population living in the village of Ghajar in the Golan Heights. Alawites form the dominant religious group on the Syrian coast and towns near the coast, which are also inhabited by Sunnis, Christians, and Ismail ...
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Inbreeding
Inbreeding is the production of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from expression of deleterious or recessive traits resulting from incestuous sexual relationships and consanguinity. Animals avoid incest only rarely. Inbreeding results in homozygosity, which can increase the chances of offspring being affected by recessive traits. In extreme cases, this usually leads to at least temporarily decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce. An individual who inherits such deleterious traits is colloquially referred to as ''inbred''. The avoidance of expression of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossin ...
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Sibling Marriage
This article gives a list of individuals who have been romantically or maritally coupled with a sibling. This list does not include coupled siblings in fiction, although ones from mythology and religion are included. Terminology There are many terms used to describe a romantic bond between siblings, including formal nomenclature such as '' adelphogamy'', specific hyponyms such '' twincest'', or slang terms like ''sibcest''. In a heterosexual context, a female partner in such a relationship may be referred as a ''sister-wife''. A similar incestuous arrangement which is non-monogamous can be referred as ''sister-swapping'' or ''brother-swapping'', although this should not be confused with '' berdel'', which describes the situation in which families exchange brides or bridegrooms. History While cousin marriage is legal in most countries, and avunculate marriage is legal in several, sexual relations between siblings are considered incestuous almost universally. Sibling incest is le ...
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Double Cousin
Most generally, in the lineal kinship system used in the English-speaking world, a cousin is a type of familial relationship in which two relatives are two or more familial generations away from their most recent common ancestor. Commonly, "cousin" refers to a first cousin – a relative of the same generation whose most recent common ancestor with the subject is a grandparent. Degrees and removals are separate measures used to more precisely describe the relationship between cousins. ''Degree'' measures the separation, in generations, from the most recent common ancestor(s) to a parent of one of the cousins (whichever is closest), while ''removal'' measures the difference in generations between the cousins themselves, relative to their most recent common ancestor(s). To illustrate usage, a second cousin is a cousin with a ''degree'' of two; there are three (not two) generations from the common ancestor(s). When the degree is not specified, first cousin is assumed. A cousin ...
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Pedigree Collapse
In genealogy, pedigree collapse describes how reproduction between two individuals who share an ancestor causes the number of distinct ancestors in the family tree of their offspring to be smaller than it could otherwise be. Robert C. Gunderson coined the term; synonyms include implex and the German ''Ahnenschwund'' (loosely translated: "loss of lineage"). Overview Without pedigree collapse, a person's ancestor tree is a binary tree, formed by the person, the parents (2), the grandparents (4), great-grandparents (8), and so on. However, the number of individuals in such a tree grows exponentially and will eventually become impossibly high. For example, a single individual alive today would, over 30 generations going back to the High Middle Ages, have 230 or roughly 1,000 million ancestors, more than the total world population at the time. This paradox is explained by shared ancestors, referred to as pedigree collapse. Instead of consisting of all different individuals, a tree ...
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Cousin Marriage
A cousin marriage is a marriage where the spouses are cousins (i.e. people with common grandparents or people who share other fairly recent ancestors). The practice was common in earlier times, and continues to be common in some societies today, though in some jurisdictions such marriages are prohibited. Worldwide, more than 10% of marriages are between first or second cousins. Cousin marriage is an important topic in anthropology and alliance theory. In some cultures and communities, cousin marriages are considered ideal and are actively encouraged and expected; in others, they are seen as incestuous and are subject to social stigma and taboo. Cousin marriage was historically practiced by indigenous cultures in Australia, North America, South America, and Polynesia. In some jurisdictions, cousin marriage is legally prohibited: for example, in mainland China, Taiwan, North Korea, South Korea, the Philippines and 24 of the 50 United States. The laws of many jurisdictions se ...
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