Error threshold in finite populations

被引:67
作者
Alves, D [1 ]
Fontanari, JF [1 ]
机构
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
来源
PHYSICAL REVIEW E | 1998年 / 57卷 / 06期
关键词
D O I
10.1103/PhysRevE.57.7008
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A simple analytical framework to study the molecular quasispecies evolution of finite populations is proposed, in which the population is assumed to be a random combination of the constituent molecules in each generation; i.e., linkage disequilibrium at the population level is neglected. In particular, for the single-sharp-peak replication landscape we investigate the dependence of the error threshold on the population size and find that the replication accuracy at the threshold increases Linearly with the reciprocal of the population size for sufficiently large populations. Furthermore, in the deterministic limit our formulation yields the exact steady state of the quasispecies model, indicating then that the population composition is a random combination of the molecules.
引用
收藏
页码:7008 / 7013
页数:6
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