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Punctuated equilibrium and criticality in a simple model of evolution

โœ Scribed by Bak, Per; Sneppen, Kim


Book ID
118144107
Publisher
The American Physical Society
Year
1993
Tongue
English
Weight
345 KB
Volume
71
Category
Article
ISSN
0031-9007

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Evolutionary patterns of thoroughbreds are estimated in terms of distribution of life-spans, avalanche size of extinction and lineage size. All of them show power-law distribution with exponent of )2.0, and show the characteristics of a particular evolutionary pattern called punctuated equilibrium.

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We consider an individual-based model of evolution. Species emergence as segregation of the population on to discrete positions in a hyper-cubical genotype space. The model emphasises interaction between coexisting genotypes. Although the rate of the micro-dynamics, consisting of reproduction and ki