Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Anhui Agricultural Sciences》 2009-14
Add to Favorite Get Latest Update

Analysis of the Evolutionary Significance of Heterosis

LI Da-lin et al(Department of Basic Courses,Liuzhou Vocational & Technical College,Liuzhou,Guangxi 545006)  
Upon the analogy of definition of heterosis and inbreeding depresstion in terms of population genetics,the heterosis was thought to be evaluated overall with fitness.By building a mathematical model,the equilibrium status of three genotypes of random mating population(i.e.RR,Rr and rr) under different fitness,which exposes that heterosis is the precondition for multiallele to exist in the population.The heterosis prpotects the genetic diversity and makes the population own a stronger self-control and evolution potential by improving the heterozygote's fitness so as not to wash out different types of genes.It deepens Darwin's thoughts of individual section by making the individual fitness consonant with population fitness.
【Fund】: 国家自然科学基金(30671111);; 广西教育厅科研项目(200807MS065)
【CateGory Index】: S334
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved