Results 181 to 190 of about 3,781 (217)
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Placozoa and the evolution of Metazoa and intrasomatic cell differentiation
International Journal of Biochemistry and Cell Biology, 2009The multicellular Metazoa evolved from single-celled organisms (Protozoa) and usually - but not necessarily - consist of more cells than Protozoa. In all cases, and thus by definition, Metazoa possess more than one somatic cell type, i.e. they show-in sharp contrast to protists-intrasomatic differentiation.
Bernd Schierwater, Rob DeSalle
exaly +3 more sources
Animal Evolution: The Enigmatic Phylum Placozoa Revisited [PDF]
Current Biology, 2005 A recent report of high levels of genetic variation between strains of Trichoplax adhaerens challenges the traditional view that the phylum Placozoa comprises only one species. At the morphological level, placozoans are amongst the simplest extant animals, but molecular evidence suggests that they may have more complex origins.
David J Miller, Eldon E Ball
exaly +4 more sources
The evolution of the placozoa: A new morphological model
Senckenbergiana Lethaea, 2002The evolutionary history of the placozoanTrichoplax adhaerens is reconstructed from a hypothetical ‘gallertoid’ ancestor. According to this approach the Placozoa derived from an early benthic gallertoid stage, the ‘placuloid’. The sequence of morphological transformations leading to the placozoan bauplan can be deduced from biomechanical and functional
Bernd Schierwater
exaly +2 more sources
The Study of Placozoa through the Ages: From Morphology to Functional Genomics
Онтогенез / Russian Journal of Developmental BiologyPlacozoa (Trichoplax) — highly simplified free-living metazoans originating during the peak of marine biodiversity diversification. Placozoans are morphologically and functionally asymmetric organisms lacking muscles, a nervous system, and clear body ...
D. Y. Romanova +2 more
semanticscholar +1 more source
NeuroReport, 2020
The origin and early evolution of neurotransmitter signaling in animals are unclear due to limited comparative information, primarily about prebilaterian animals.
D. Y. Romanova +6 more
semanticscholar +1 more source
The origin and early evolution of neurotransmitter signaling in animals are unclear due to limited comparative information, primarily about prebilaterian animals.
D. Y. Romanova +6 more
semanticscholar +1 more source
Biologia, 2007
It was shown that compensatory base changes (CBCs) in internal transcribed spacer 2 (ITS2) sequence-structure alignments can be used for distinguishing species. Using the ITS2 Database in combination with 4SALE — a tool for synchronous RNA sequence and secondary structure alignment and editing — in this study we present an in-depth CBC analysis for ...
Matthias Wolf +5 more
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It was shown that compensatory base changes (CBCs) in internal transcribed spacer 2 (ITS2) sequence-structure alignments can be used for distinguishing species. Using the ITS2 Database in combination with 4SALE — a tool for synchronous RNA sequence and secondary structure alignment and editing — in this study we present an in-depth CBC analysis for ...
Matthias Wolf +5 more
openaire +1 more source
On the genetic uniformity of the genus Trichoplax (Placozoa)
Russian Journal of Genetics, 2004Fragments of the nuclear and mitochondrial genes for the large-subunit rRNA were compared for Trichoplax sp. and T. adhaerens. High similarity was observed for their sequences, suggesting that different Trichoplax isolates belong to one species.
V V, Aleshin +3 more
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Annotation of a New Low Voltage Activated Calcium Channel of Trichoplax adhaerens (Phylum Placozoa)
BiofizikaStudying the voltage-gated calcium channels sheds light on the formation of systems responsible for the coupling of sensors and actuators in a living cell. A homologue of 2090 aa lUNKth in the Trichoplax sp.
A. V. Kuznetsov, L. E. Kartashov
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