SINES - SHORT INTERSPERSED REPEATED ELEMENTS OF THE EUKARYOTIC GENOME

被引：168

作者：

OKADA, N

机构：

[1] Norihiro Okada is at the Institute of Biological Sciences, University of Tsukuba, Tsukuba Ibaraki

来源：

TRENDS IN ECOLOGY & EVOLUTION | 1991年 / 6卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1016/0169-5347(91)90226-N

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Much of the eukaryotic genome is composed of a variety of repetitive sequences. Amongst these, there are two kinds of retroposons (sequence elements derived from nonviral cellular RNA): SINEs (short interspersed elements) and LINEs (long interspersed elements). Amplification of SINEs occurs in a single germ cell, and the members of SINEs spread and become fixed in populations through genetic drift. SINEs can be regarded as phylogenetic landmarks: they are specific to one species, a few species, a genus or in some cases a family, indicating a specific time of amplification during evolution. Recent studies concerning the structure and origin of many SINEs revealed that retroposons are more widespread in animal genomes than was previously thought.

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页码：358 / 361

页数：4

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