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Are Hox Genes Ancestrally Involved in Axial Patterning? Evidence from the Hydrozoan Clytia hemisphaerica (Cnidaria)
The phylogenetic analyses do not support an origin of ParaHox and Hox genes by duplication of an ancestral ProtoHox cluster, and reveal a diversification of the cnidarian HOX9-14 genes into three groups called A, B, C.
Somatic stem cells express Piwi and Vasa genes in an adult ctenophore: ancient association of "germline genes" with stemness.
A Large and Consistent Phylogenomic Dataset Supports Sponges as the Sister Group to All Other Animals
Expansion of the SOX gene family predated the emergence of the Bilateria.
Phylogenetic Analysis of Invertebrate Lysozymes and the Evolution of Lysozyme Function
The genomic structure of the gene encoding the lysozyme of Mytilus edulis, the common mussel is determined and it is proposed that the origin of this domain can be traced back in evolution to theorigin of bilaterian animals.
Phylogenetic relationships of conifers inferred from partial 28S rRNA gene sequences.
- S. Stefanoviac, M. Jager, J. Deutsch, J. Broutin, M. Masselot
- BiologyAmerican journal of botany
- 1 May 1998
Cl cladistic analyses using a new data set obtained from 28S rRNA gene sequences strongly support the monophyly of conifers including Taxaceae and suggest that the common ancestor of these families, both having the greatest diversity in the Southern Hemisphere, inhabited Gondwanaland.
Maternally localized germ plasm mRNAs and germ cell/stem cell formation in the cnidarian Clytia.
MADS-box genes in Ginkgo biloba and the evolution of the AGAMOUS family.
- M. Jager, A. Hassanin, M. Manuel, H. le Guyader, J. Deutsch
- BiologyMolecular biology and evolution
- 1 May 2003
A study of MADS-box genes in Ginkgo biloba, the unique extant representative of a whole branch of the phylogenetic tree of the seed plants, revealed that one of these genes, GBM5, is an orthologue of the AGAMOUS gene of A. thaliana.
New insights on ctenophore neural anatomy: immunofluorescence study in Pleurobrachia pileus (Müller, 1776).
- M. Jager, Roxane Chiori, A. Alié, Cyrielle Dayraud, E. Quéinnec, M. Manuel
- BiologyJournal of experimental zoology. Part B…
- 15 May 2011
In this study, the neuro-anatomy of the ctenophore Pleurobrachia pileus was explored by whole-mount fluorescent antibody staining using antibodies against tyrosylated -tubulin, FMRFamide, and vasopressin, and the organization of the aboral neuro-sensory complex comprising the apical organ and polar fields is described.
Homology of arthropod anterior appendages revealed by Hox gene expression in a sea spider
It is concluded that the protocerebral appendages have been lost in all extant arthropod groups, including the Euchelicerata and the Mandibulata.