منابع مشابه
Bacterial evolution: Jittery genomes
Recent studies of long-term experimental populations of bacteria have revealed the actual progression of evolutionary change and how rates of phenotypic evolution can be decoupled from rates of genomic evolution.
متن کاملGene conversion and concerted evolution in bacterial genomes.
Gene conversion is defined as the non-reciprocal transfer of information between homologous sequences. Despite methodological problems to establish non-reciprocity, gene conversion has been demonstrated in a wide variety of bacteria. Besides examples of high-frequency reversion of mutations in repeated genes, gene conversion in bacterial genomes has been implicated in concerted evolution of mul...
متن کاملConditions for the Evolution of Gene Clusters in Bacterial Genomes
Genes encoding proteins in a common pathway are often found near each other along bacterial chromosomes. Several explanations have been proposed to account for the evolution of these structures. For instance, natural selection may directly favour gene clusters through a variety of mechanisms, such as increased efficiency of coregulation. An alternative and controversial hypothesis is the selfis...
متن کاملevolution in bacterial genomes : the biased gene conversion
20. CC-BY-NC-ND 4.0 International license peer-reviewed) is the author/funder. It is made available under a The copyright holder for this preprint (which was not. Abstract The characterization of functional elements in genomes relies on the identification of the footprints of natural selection. In this quest, taking into account neutral evolutionary processes 25 such as mutation and genetic dri...
متن کاملEcological and Temporal Constraints in the Evolution of Bacterial Genomes
Studies on the experimental evolution of microorganisms, on their in vivo evolution (mainly in the case of bacteria producing chronic infections), as well as the availability of multiple full genomic sequences, are placing bacteria in the playground of evolutionary studies. In the present article we review the differential contribution to the evolution of bacterial genomes that processes such a...
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ژورنال
عنوان ژورنال: Current Biology
سال: 1999
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(99)80302-9