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Global trends of whole-genome duplications revealed by the ciliate Paramecium tetraurelia.

Archive ouverte | Aury, Jean-Marc | CCSD

The duplication of entire genomes has long been recognized as having great potential for evolutionary novelties, but the mechanisms underlying their resolution through gene loss are poorly understood. Here we show that in the unic...

The Paramecium Germline Genome Provides a Niche for Intragenic Parasitic DNA: Evolutionary Dynamics of Internal Eliminated Sequences.

Archive ouverte | Arnaiz, Olivier | CCSD

International audience. Insertions of parasitic DNA within coding sequences are usually deleterious and are generally counter-selected during evolution. Thanks to nuclear dimorphism, ciliates provide unique models t...

Analysis of sequence variability in the macronuclear DNA of Paramecium tetraurelia: a somatic view of the germline.

Archive ouverte | Duret, L. | CCSD

Ciliates are the only unicellular eukaryotes known to separate germinal and somatic functions. Diploid but silent micronuclei transmit the genetic information to the next sexual generation. Polyploid macronuclei express the geneti...

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