Clonal analysis of Distal-less and engrailed expression patterns during early morphogenesis of uniramous and biramous crustacean limbs

  title={Clonal analysis of Distal-less and engrailed expression patterns during early morphogenesis of uniramous and biramous crustacean limbs},
  author={Andreas Hejnol and Gerhard Scholtz},
  journal={Development Genes and Evolution},
In order to investigate the correlation of cell lineage, gene expression, and morphogenesis of uniramous and biramous limbs we studied limb formation in the thorax and pleon of the amphipod Orchestia cavimana and the isopod Porcellio scaber. We took advantage of the fact that in amphipod and isopod crustaceans—both Malacostraca—uniramous limbs evolved independently in the thorax whereas ancestral biramous limbs are formed in the pleon (abdomen). The gene Distal-less is expressed in the early… 

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