基因重复研究进展

基因复制是基因通过不等交换，反转录转座或由全基因组复制等途径产生一个与原基因相似的基因或碱基序列，它与生物体基因组大小的进化、新基因的起源、物种的分化以及基因抗突变的能力大小等都密切相关。本文综述了复制基因的产生和保留机制、选择作用、分化的途径以及复制基因进化速率等方面的相关研究，揭示了基因复制对于生物进化的重要性，以引起大家对该领域的了解与关注。关键词：基因复制；复制基因；不等交换；反转录转座；全基因组复制

Progress in the Study of Gene Duplication

Gene duplication is one of the most important factors that influence the evolution of genome size,the origination of novel gene,the genetic robustness against null mutations,the speciation,etc.Duplication can be created by unequal crossing over,retroposition,or whole genome(or chromosomal) duplication.In this review,we summarized the studies of the molecular mechanisms of gene duplication,the preservation of duplicated gene,the selections acting on duplicated gene,the alternative ways of divergence and the evolution rate.