Titlebook: Evolution and Impact of Transposable Elements; Pierre Capy Book 1997 Springer Science+Business Media Dordrecht 1997 Chromosome.Telomere.co

outer-ear

LTR retrotransposons and the evolution of eukaryotic enhancerspose that LTR retroelements and perhaps other retrotransposons constitute drive mechanisms for the evolution of eukaryotic enhancers which can be subsequently distributed throughout host genomes to play a role in regulatory evolution.

合适

Quasispecies in retrotransposons: a role for sequence variability in Tnt1 evolutionlike structure. This population structure gives to Tntl, as in the case of retroviruses, a high sequence plasticity and an adaptive capacity. We propose this adaptivity as the major reason for Tntl maintenance in . genomes and we discuss in this paper the importance of sequence variability for Tntl evolution.

无脊椎

CM-gag, a transposable-like element reiterated in the genome of , mosquitoes, contains only a , gene. the homogeneity of CM-gag copies that are distributed worldwide suggests that they have most probably been amplified recently. Furthermore, selective constraints against amino acid changes have been acting on these sequences, suggesting that they need to encode the gag-like protein to be incorporated into the chromosomes.

CAB

Evidence for a host role in regulating the activity of transposable elements in ,: the case of the pransposable elements. Consistent with this conclusion are the properties of Bari 1 elements, which are the only ones of the 14 families tested to be unstable in Charolles stock. Instability is persistent over 53 generations and appears to affect recurrent insertion sites.

荨麻

The evolution of Ty 1-, group retrotransposons in eukaryote genomesary greatly between these different hosts. We will try to resolve these apparent discrepancies between these properties, explain any fundamental differences in the biology of the Ty1. group between hosts, and propose a general model for LTR retrotransposon evolution.

ARK

0929-712X ibute significantly to genome function and evolution. The recent increased interest in TEs is based on the realization that they are a major genetic component (at least 10--20%) of all organisms and a major contributor to the mutation process. It is currently estimated that 70--80% of spontaneous mu

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abreast

描绘

嘲弄

What makes , retrotransposon different?transcript of 900 b that hybridizes with ORF23 probes is found in all the maize tissues explored. This is despite the high level of methylation in the DNA of .. Genomic RNA has not been detected in any tissue or situation studied, probably reflecting a non-functional retrotransposon. the origin of O