Integrity of Four Theories on Natural Selection Unit  

关于自然选择单位的四种学说的内在统一(英文)

作　　者：韦文惠[1] 陈奇[1] 李大林[1] 

机构地区：[1]柳州职业技术学院,广西柳州545006

出　　处：《Agricultural Science & Technology》2012年第3期481-484,491,共5页农业科学与技术（英文版）

基　　金：Supported by the Scientific Research Program of the Education Department of Guangxi Zhuang Autonomous Region of China (200807MS065);the Education Department of Guangxi Zhuang Autonomous Region of China (201106LX743)~~

摘　　要：[Objective] The aim was to study the internal relationship of the four theories on natural selection unit. [Method] The value field of fitness of heterozygote was investigated by constructing mathematical models, to clarify the internal relations of the four theories on natural selection unit. [Result] According to mathematical modes constructed in the study, only the mutated genes meet the requirements of natural selection on heterozygous and homozygous aspects, as well as show high fitness in heterozygous condition, could the mutated genes be kept, giving consideration to both individual and population adaptation. Thus, this methodology theoretically inte- grates the theories of individual selection, collective selection, and genetic selection as well as Kimura＇s neutral theory of health information. [Conclusion] The result of this study suggested that the four theories on natural selection unit can co-exist, and share common premises.[目的]探讨关于自然选择单位的4种学说的内在联系。[方法]通过建立数学模型,探讨遗传群体杂合子适合度取值范围,阐明自然选择单位的4种学说的内在联系。[结果]根据研究中建立的数学模型,发现突变基因必须在纯和杂2方面都满足自然选择的要求,而且能在杂合状态下表现出高适合度,才更容易被保留下来,这就兼顾到个体的适应与集体的适应。从而在理论上统一了个体选择,集体选择,基因选择及木村资生的中性学说。[结论]该研究结果显示关于自然选择单位的4种学说是可共存的,彼此间分享了一个共同的前提。

关 键 词：Individual selection Collective selection Genetic selection Neutral theory Mathematical model 

分 类 号：S333[农业科学—作物遗传育种]