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原文連結
論文資訊
- 類型：已發表論文
- 日期：2013
摘要
alancing selection is a special case of frequency-dependent selection that is known to be the major force for the maintenance of 生物多樣性 and polymorphism in natural 族群s. In finite 族群s, 遺傳漂變 eventually drives the 族群 to fixation to the detriment of 生物多樣性. The interplay between selection and 遺傳漂變 is much richer in spatially extended 族群s, where the local density of individuals can be low even in the limit of infinitely large systems. We consider the limit of low local density of individuals (strong 遺傳漂變) that is well represented by a modified voter model. We show analytically the existence of a non-equilibrium 相變 between a region in which fixation always occurs and a coexistence phase for a one-dimensional system. We also provide a characterization of the dynamical properties of the system, in p
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