THE EARLY EVOLUTION OF CELLULAR LIFE

被引：46

作者：

GOGARTEN, JP

机构：

[1] Dept of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269-3044

来源：

TRENDS IN ECOLOGY & EVOLUTION | 1995年 / 10卷 / 04期

关键词：

D O I：

10.1016/S0169-5347(00)89024-2

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Recent progress in data collection and analysis has changed the study of origin of life from an area dominated by speculation into a field abundant with testable hypotheses. This review discusses advances in the following areas: the fossil records; the 'retrodiction' of biochemical pathways; and contradictions between different molecular phylogenies. The latter indicates a limited number of horizontal gene transfers during the early evolution. However, these cases of horizontal gene transfer are so infrequent that they can be detected as exceptions in an otherwise coherent picture. Cases of horizontal gene transfer can be recognized within the background of the majority consensus of molecular markers. The fusion of separate lineages to form new species is revealed by the simultaneous horizontal transfer of several independent genes.

引用

页码：147 / 151

页数：5

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