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      • Genetics
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          • Term
            • deme
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          • Definition(s)
            • A locally interbreeding population. Hypermedia Glossary Of Genetic Terms
          • Example sentence(s)
            • Basically, the virtual world where migrations take place is constituted by a matrix of demes. Each deme has its own environmental characteristics according to the input files. - Splatche
            • Key components of this simulation model include: (i) a three layer intra-deme population structure: hunter-gatherers, non-dairying farmers and dairying farmers. (ii) Population genetic simulation of a LP allele under selection, and an undrifted allele signifying general genetic background. (iii) Intra and inter-deme gene flow and sporadic longer distance migration (following a Gaussian random walk process). - UNIVERSITY COLLEGE LONDON
            • The application of the island model is limited because it does not in fact contain explicit geography: migrants are equally likely to have come from any deme in the population. - Oxford Journals
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    • Japanese
      • Genetics
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          • Term
            • デーム　
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          • Definition(s)
            • 一般的には相互に交配する集団（地域繁殖集団）が群れと見なされる。これをデームと呼ぶ事もある。しかし実際には交配可能な集団の内部に、より小さな集団が存在することもある。このばあい、古典的な群選択はデーム間群選択と呼ばれる。これは上述したように限られた状態でしか起こらないと考えられている。デーム内の小集団の間で起きるデーム内群選択は血縁選択と同じものだと考えられている[7]。 Wikipedia　郡選択 - by stock
          • Example sentence(s)
            • 同所的種分化 (Sympatric speciation)は、地理的な隔離がなく、一つのデーム（交配している集団）において個体の分散・移動の範囲のなかで生殖隔離をしたあらたな集団が生じることである。 - 日本進化学会ニュース (c) 日� by stock
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    • Chinese
      • Genetics
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          • Term
            • 同类群，混交群体
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          • Definition(s)
            • A subpopulation of a species: a discrete interbreeding group of organisms, with recognizable cytological or genetic characters, that is spatially distinct from other such groups, although it may be adjacent to them. Compare subspecies. 混交群体（同类群）：一个不连续的异体交配的生物体类群。它们所具有的细胞学和遗传学上的性状在空间上与其他的类群不同，尽管它们可能是相邻的。 EDU - by Han Li
          • Example sentence(s)
            • 以家蝇为例，就是小到一个城市范围内，对家蝇来说环境条件仍不相同，例如厕所周围、垃圾周围、腐肉周围等等，具体生存条件也都不一致，因此种群内也可以分成小群或亚群，这种小群又称为同类群(deme)，同类群的个体之间比较相似，因为在遗传性状上个体之间更为接近，且所处的环境条件相同。这些同一种内处于不同生境的种群或小的生态群就是新种形成的基础。例如分布于美洲落矶山脉的一种小鼠(Peromyscus maniculatus)，根据生活在不同地域可分为四个亚种。它们的分布有互相重叠的区域，在这个区域中混居的亚种之间可以互相交配产生后代。 - 烟台大学 by Han Li
            • 在更高的层次水平上，以整个繁殖群为选择单位，使得具有不同类型的基因型的群组在不同程度上消亡，称之为同生群（deme）间的选择。 - 虚拟科学院 by Han Li
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    • Italian
      • Genetics
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          • Term
            • deme
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          • Definition(s)
            • Categoria più ristretta dell’ecotipo. È l’unità di popolazione più piccola, formata da gruppi di individui geneticamente molto simili, uniti uno all’altro da un interno rapporto temporale e spaziale. Si tratta di porzioni molto ristrette di popolazioni parzialmente isolate. Deme (accezione comune): sottopopolazione Suffisso ‘-deme’: gruppo di individui appartenenti a una categoria tassonomica specifica Scienze della Terra - by texjax DDS PhD
          • Example sentence(s)
            • Natural species are often composed of subspecies that differ conspicuously except in the zones of intergradation, and these are likely to be subdivided into local races with market statistical differences and so on in hierarchic fashion to ones with only slight statistical differences. The ultimate unit is the more or less completely isolated local population or deme (Gilmour and Gregor 1939) within which breeding may usually be treated as occurring at random. It is very unusual for a whole species to consist in a single deme. […] The effective size of a deme is often so small that the recurrence rates of mutations are likely to be negligibly small even over considerable periods of time. On the other hand, immigration of individuals from other demes, followed by crossbreeding, must nearly always be a very important factor in their histories. - Evolution and the Genetics of Population by texjax DDS PhD
            • “Demes” are groups of individuals who are more genetically similar to each other than to any other individuals. - Responsible Genetics by texjax DDS PhD
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