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Insights into the evolution of the snail superfamily from metazoan wide molecular phylogenies and expression data in annelids.

Archive ouverte | Kerner, Pierre | CCSD

International audience. BACKGROUND: An important issue concerning the evolution of duplicated genes is to understand why paralogous genes are retained in a genome even though the most likely fate for a redundant dup...

Posterior elongation in the annelid Platynereis dumerilii involves stem cells molecularly related to primordial germ cells

Archive ouverte | Béhague, Julien | CCSD

International audience. Like most bilaterian animals, the annelid Platynereis dumerilii generates the majority of its body axis in an anterior to posterior temporal progression with new segments added sequentially. ...

Hedgehog signaling regulates segment formation in the annelid Platynereis.

Archive ouverte | Dray, Nicolas | CCSD

International audience. Annelids and arthropods share a similar segmented organization of the body whose evolutionary origin remains unclear. The Hedgehog signaling pathway, prominent in arthropod embryonic segment ...

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