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Endogamy
Endogamy is the cultural practice of marrying within a specific social group, religious denomination, caste, or ethnic group, rejecting any from outside of the group or belief structure as unsuitable for marriage or other close personal relationships. Its opposite, exogamy, describes the social norm of marriage outside of the group. Endogamy is common in many cultures and ethnic groups. Several religious and Ethnic religion, ethnic religious groups are traditionally more endogamous, although sometimes mating outside of the group occurs with the added dimension of requiring Marital conversion, marital religious conversion. This permits an exogamous marriage, as the convert, by accepting the partner's religion, becomes accepted within the endogamous group. Endogamy may result in a higher rate of recessive gene–linked genetic disorders. Adherence Endogamy can encourage sectarianism and serves as a form of self-segregation. For instance, a community resists integration or comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caste
A caste is a Essentialism, fixed social group into which an individual is born within a particular system of social stratification: a caste system. Within such a system, individuals are expected to marry exclusively within the same caste (endogamy), follow lifestyles often linked to a particular occupation, hold a ritual status observed within a hierarchy, and interact with others based on cultural notions of social exclusion, exclusion, with certain castes considered as either more pure or more polluted than others. The term "caste" is also applied to morphological groupings in eusocial insects such as ants, bees, and termites#caste, termites. The paradigmatic ethnographic example of caste is the division of India's Hinduism, Hindu society into rigid social groups. Its roots lie in South Asia's ancient history and it still exists; however, the economic significance of the caste system in India seems to be declining as a result of urbanisation and affirmative action programs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethnic Group
An ethnicity or ethnic group is a group of people with shared attributes, which they collectively believe to have, and long-term endogamy. Ethnicities share attributes like language, culture, common sets of ancestry, traditions, society, religion, history or social treatment. Ethnicities may also have a narrow or broad spectrum of genetic ancestry, with some groups having mixed genetic ancestry. ''Ethnicity'' is sometimes used interchangeably with ''nation'', particularly in cases of ethnic nationalism. It is also used interchangeably with '' race'' although not all ethnicities identify as racial groups. By way of assimilation, acculturation, amalgamation, language shift, intermarriage, adoption and religious conversion, individuals or groups may over time shift from one ethnic group to another. Ethnic groups may be divided into subgroups or tribes, which over time may become separate ethnic groups themselves due to endogamy or physical isolation from the parent gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. In some jurisdictions such marriages are prohibited due to concerns about inbreeding. 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. Other societies may take a neutral view of the practice, neither encouraging nor condemning it, though it is usually not considered the norm. Cousin marriage was historically practiced by indigenous cultures in Indigenous Australians, Australia, Indigenous peoples of the Americas#North America, North America, Indig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aari People
Aari or Ari are a tribal Omotic languages, Omotic people indigenous to Omo valley, Omo Valley of Ethiopia. According to 2007 census there are 289,835 ethnic Aari in Ethiopia, which makes up around 0.29% of the country's total population. Nearly all Aari speak the South Omotic Aari language, though more than half of them are Multilingualism, multilingual and can also speak other languages such as Amharic. History Until the 19th century, Aari people lived under independent chiefdoms. The divine ruler of the Aari tribal societies were called ''baabi''. In the late 1800s, the Omo River region was conquered by the Ethiopian Empire under Emperor Menelik II of Ethiopia, which resulted in the widespread adoption of Amhara people, Amharic culture and the Amharic language there. By the early 1900s, the Amhara people, Amhara rulers had consolidated their control over the region and many Aari became serfs. Aari culture experienced significant decline during this time, although it and the Aa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urapmin People
The Urapmin people are an ethnic group numbering about 375 people in the Telefomin District of the West Sepik Province of Papua New Guinea. One of the Min peoples who inhabit this area, the Urapmin share the common Min practices of hunter-gatherer subsistence, taro cultivation, and formerly, an elaborate secret cult available only to initiated men. The Urapmin used to ally with the Telefolmin in war against other Min peoples, practicing cannibalism against the enemy dead, but warfare ceased by the 1960s with the arrival of colonialism. A Christian revival in the 1970s led to the near-complete abandonment of traditional beliefs and the adoption of a form of Charismatic Christianity originally derived from Baptist Christianity. The Urapmin vigorously use their native Urap language, and their small community maintains the practice of endogamy. Classification The Urapmin are one of the Min peoples, a group of related peoples in Papua New Guinea who number about thirty thou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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'' ("loss of ancestors"). 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 billion ancestors, more than the total world population at the time. This paradox is explained by shared ancestors. Instead of consisting of all different individuals, a tree may have multiple places occupied by a single individu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Consanguinity
Consanguinity (from Latin '':wikt: consanguinitas, consanguinitas'' 'blood relationship') is the characteristic of having a kinship with a relative who is descended from a common ancestor. Many jurisdictions have laws prohibiting people who are closely related by blood from Consanguine marriage, marrying or having sexual relations with each other. The degree of relationship, degree of consanguinity that gives rise to this prohibition varies from place to place. On the other hand, around 20% of the global population lives in areas where some consanguinous marriages are preferred. The degree of relationships are also used to determine heirs of an estate according to statutes that govern intestacy, intestate succession, which also vary from jurisdiction to jurisdiction. In some communities and time periods, cousin marriage is allowed or even encouraged; in others, it is taboo, and considered to be incest. The degree of relative consanguinity can be illustrated with a ''consanguinity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inbreeding
Inbreeding is the production of offspring from the mating or breeding of individuals or organisms that are closely genetic distance, 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 wikt:deleterious, deleterious dominance (genetics), recessive traits resulting from incestuous sexual relationships and consanguinity. Animals avoid inbreeding only rarely. Inbreeding results in homozygous, homozygosity which can increase the chances of offspring being affected by recessive phenotypic trait, traits. In extreme cases, this usually leads to at least temporarily decreased Fitness (biology), 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 allel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tristan Da Cunha
Tristan da Cunha (), colloquially Tristan, is a remote group of volcano, volcanic islands in the South Atlantic Ocean. It is one of three constituent parts of the British Overseas Territories, British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, with its own constitution. 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 had 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. As there is no airstrip on the island, the only way of travelling to or from Tristan is by ship. There are six-day journeys from Cape Town, South Africa, and some cruises offered departing from Ushuaia, Argentina. History Discovery The islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exogamy
Exogamy is the social norm of mating or marrying outside one's social group. The group defines the scope and extent of exogamy, and the rules and enforcement mechanisms that ensure its continuity. One form of exogamy is dual exogamy, in which two groups continually intermarry with each other. In social science, exogamy is viewed as a combination of two related aspects: biological and cultural. Biological exogamy is the marriage of people who are not blood relatives. This is regulated by incest taboo, incest taboos and Legality of incest, laws against incest. Cultural exogamy is marrying outside a specific cultural group; the opposite being endogamy, marriage within a social group. Biology of exogamy Exogamy often results in two individuals that are not closely genetically related marrying each other; that is, outbreeding as opposed to inbreeding. This may benefit offspring as it reduces the risk of the offspring inheriting two copies of a defective gene. Nancy Wilmsen Thornhi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Toronto
The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by royal charter in 1827 as King's College, the first institution of higher learning in Upper Canada. Originally controlled by the Church of England, the university assumed its present name in 1850 upon becoming a secular institution. It has three campuses: University of Toronto Mississauga, Mississauga, #St. George campus, St. George, and University of Toronto Scarborough, Scarborough. Its main campus, St. George, is the oldest of the three and located in Downtown Toronto. U of T operates as a collegiate university, comprising 11 #Colleges, colleges, each with substantial autonomy on financial and institutional affairs and significant differences in character and history. The University of Toronto is the largest university in Canada with a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient DNA And The New Science Of The Human Past
Ancient history is a time period from the beginning of writing and recorded human history through late antiquity. The span of recorded history is roughly 5,000 years, beginning with the development of Sumerian cuneiform script. Ancient history covers all continents inhabited by humans in the period 3000 BCAD 500, ending with the expansion of Islam in late antiquity. The three-age system periodises ancient history into the Stone Age, the Bronze Age, and the Iron Age, with recorded history generally considered to begin with the Bronze Age. The start and end of the three ages vary between world regions. In many regions the Bronze Age is generally considered to begin a few centuries prior to 3000 BC, while the end of the Iron Age varies from the early first millennium BC in some regions to the late first millennium AD in others. During the time period of ancient history, the world population was exponentially increasing due to the Neolithic Revolution, which was in full progr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
