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Are Hox Genes Ancestrally Involved in Axial Patterning? Evidence from the Hydrozoan Clytia hemisphaerica (Cnidaria)
Background The early evolution and diversification of Hox-related genes in eumetazoans has been the subject of conflicting hypotheses concerning the evolutionary conservation of their role in axialExpand
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Somatic stem cells express Piwi and Vasa genes in an adult ctenophore: ancient association of "germline genes" with stemness.
Stem cells are essential for animal development and adult tissue homeostasis, and the quest for an ancestral gene fingerprint of stemness is a major challenge for evolutionary developmental biology.Expand
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Phylogenetic relationships of conifers inferred from partial 28S rRNA gene sequences.
The conifers, which traditionally comprise seven families, are the largest and most diverse group of living gymnosperms. Efforts to systematize this diversity without a cladistic phylogeneticExpand
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Expansion of the SOX gene family predated the emergence of the Bilateria.
Members of the SOX gene family are involved in regulating many developmental processes including neuronal determination and differentiation, and in carcinogenesis. So far they have only beenExpand
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Phylogenetic Analysis of Invertebrate Lysozymes and the Evolution of Lysozyme Function
Abstract. We isolated and sequenced the cDNAs coding for lysozymes of six bivalve species. Alignment and phylogenetic analysis showed that, together with recently described bivalve lysozymes, theExpand
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A Large and Consistent Phylogenomic Dataset Supports Sponges as the Sister Group to All Other Animals
Resolving the early diversification of animal lineages has proven difficult, even using genome-scale datasets. Several phylogenomic studies have supported the classical scenario in which spongesExpand
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Maternally localized germ plasm mRNAs and germ cell/stem cell formation in the cnidarian Clytia.
The separation of the germ line from the soma is a classic concept in animal biology, and depending on species is thought to involve fate determination either by maternally localized germ plasmExpand
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New insights on ctenophore neural anatomy: immunofluorescence study in Pleurobrachia pileus (Müller, 1776).
Ctenophores are non-bilaterian animals sharing with cnidarians and bilaterians the presence of sensory receptors, nerve cells, and synapses, absent in placozoans and sponges. Although recentExpand
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MADS-box genes in Ginkgo biloba and the evolution of the AGAMOUS family.
MADS-box proteins are a large family of transcription factors. In plants, many genes belonging to this family are involved in the homeosis of the floral system. Up to now, they have mainly beenExpand
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Homology of arthropod anterior appendages revealed by Hox gene expression in a sea spider
Arthropod head segments offer a paradigm for understanding the diversification of form during evolution, as a variety of morphologically diverse appendages have arisen from them. There has beenExpand
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