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Encyclopedia > Supercluster (genetic)

See Supercluster for use of the word in astronomy. Superclusters are large groupings of smaller galaxy groups and clusters, and are among the largest structures of the cosmos. ... In ancient Greece and other early civilizations, astronomy consisted largely of astrometry, measuring positions of stars and planets in the sky. ...


Most usage of supercluster in population genetics research articles applies to proposed large groups of human mtDNA haplotype lineages, found by cluster analysis, that are thought to stem from a single distant most recent common ancestor, on a time scale of tens of thousands of years. Population genetics is the study of the distribution of and change in allele frequencies under the influence of the five evolutionary forces: natural selection, genetic drift, mutation, migration and nonrandom mating. ... Mitochondrial DNA (mtDNA) is DNA which is not located in the nucleus of the cell but in the mitochondria. ... A haplotype, a contraction of the phrase haploid genotype, is the genetic constitution of an individual chromosome. ... Lineage refers to: kinship and descent, a concept of cultural anthropology used to track kinship and descent. ... Data clustering is a common technique for data analysis, which is used in many fields, including machine learning, data mining, pattern recognition, image analysis and bioinformatics. ... The most recent common ancestor (MRCA) of any set of organisms is the most recent individual which is an ancestor of all of them. ...

  • The sub-Saharan African mtDNAs belong largely to a mtDNA supercluster L
  • More than 90% of European mtDNAs belong to nine haplogroups (Fig. 1), which are highly specific for Western Eurasia (4, 6). These clusters are all thought to originate from one supercluster, L3n (N).
  • The main determinants of this PC analysis are therefore the HV supercluster members, haplogroups H, HV, and pre-HV. Actually, whereas in the European populations haplogroup H reaches its highest frequencies, HV and pre-HV mtDNAs (when present) have a very low incidence.
  • We have denoted it as lineage M-I as it is obviously different from other members of M supercluster occurring in Siberia/Asia.
  • A high frequency of mtDNA types belonging to Asian supercluster M was peculiar for Yakuts
  • A high frequency of mtDNA types belonging to Asian supercluster M was peculiar for Yakuts

Several frequently referenced Wikipedia articles apply supercluster to geographically defined human populations instead of mtDNA strains. This usage is rarely seen on the web outside of Wikipedia articles. However, it does appear in the seminal Cavalli-Sforza 1988 paper Reconstruction of human evolution: bringing together genetic, archaeological, and linguistic data. to describe "Northeurasian" and "Southeast Asian" collections of sampled populations, which are also more frequently referred to in the paper as "major cluster" or simply "cluster". Therefore it might be considered a neologism or, more likely, an ideosyncratic usage according to the Google test. A race is a population of humans distinguished in some way from other humans. ... Mitochondrial DNA (mtDNA) is DNA which is not located in the nucleus of the cell but in the mitochondria. ... See also: Wikipedia:FAQ A Wikipedia article is defined as a page that has encyclopedic or almanac-like information on it (almanac-like being; lists, timelines, tables or charts). ... Categories: People stubs | 1922 births | Italian people | Population geneticists ...

Usage of supercluster for populations as well as haplotypes makes the term ambiguous and may require clarification when the word is used. A term referring to the Caucasoid race, expressing the view that it is a branch of the proposed Northern Eurasian Supercluster genetic division (or macro-race) of humanity. ... A term referring to the Mongoloid (or Sinoid) branch of the proposed Northern Eurasian Supercluster genetic division (or macro-race) of humanity. ... Typical Caucasoid Skull Caucasoid describes humans primarily from Europe, the Middle East (Western Asia), North Africa, the Indian subcontinent and parts of Central Asia, and is one of the four traditional major races recognized by physical anthropologists. ... A term referring to the European branch of the Caucasoid subgroup of the Eurasiatic Supercluster genetic division of humanity. ... A term describing non-European Caucasoids from North Africa, West Asia, Central Asia and the Indian subcontinent and their descendants in other parts of the world. ... Australoid describes a major race of humans primarily from Australia but also prersent in New Guinea and Melanesia. ... A portrait of the Mongol ruler Genghis Khan Taiwanese aborigine dancer. ... Northern Mongoloids represent a division of the Eastern Eurasian branch of the Eurasiatic Supercluster, a genetic cluster of human populations comprising Caucasoids in the West and Mongoloids in the East, and includes populations indigenous to North Asia, the Americas and Greenland, as well as their descendants in other parts of... Southern Mongoloids represent a division of the Eastern Eurasian branch of the Eurasiatic Supercluster, a genetic cluster of human populations comprising Caucasoids in the West and Mongoloids in the East, and includes most Southeast Asians and Polynesians, as well as their descendants in other parts of the world. ...


  Results from FactBites:
 
Mongoloid race - Wikipedia, the free encyclopedia (2455 words)
The Southern Mongoloid is typically shorter-nosed, with quite hairless bodies, and tend to be slender.
Based on these parameters, populations genetically unrelated to Mongoloids, such as the Khoisan, are found to be "Mongoloid".
According to the Human Species (2003), East Asians generally are more genetically similar to the South Asians than to Southeast Asians, because the Far East and the Indian Subcontinent are members of the Eurasian branch while Southeast Asians (including south Chinese) are members or the Oceanic branch.
  More results at FactBites »


 

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