自组织作用在生物进化中的模拟研究

摘要

Biological evolution can be viewed as the formation of orderedstructure by self-organization under the driven of mutations.It studies only the results of natural evolution,but can not analyze the process quantitatively.In this paper,the framework of evolutionary computation was implemented to construct a model of natural evolution.The function of self-organization in the evolution was analyzed in the genetic,individual and population levels.The differentiation of population and formation of new species under random initial condition and breaking of environment was simulated.The geographic influence and the distribution of transitional species were analyzed,and the number of species under limited region was simulated.%生物的进化可以看作是在基因随机突变的驱动下，通过自组织作用而形成高级有序结构的过程。生物进化研究只能看到进化的结果，而不能对进化的过程进行定量分析和检验。采用进化计算的算法框架对进化现象进行模拟研究，从基因层、个体表现层和种群层三个层次对自组织作用在个体和物种进化中的作用进行分析，模拟随机初始条件及环境突变条件下种群的分化和物种形成过程，研究地域分布对物种分化和形成的影响，以及过渡物种的分布特点，并对有限地域条件下地域面积和物种数量的关系进行了模拟研究。