13 research outputs found

    Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera-1

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    Evel. Differences in helices between Calcaronea and Calcinea are in frames (Calcaronea = black, Calcinea = grey). Synapomorphies for each subclass are shown in boxes with the same color code. Primer positions are bold at the 5' and 3' end, respectively. Open circles instead of dots mark positions where mismatches occur in some sequences. Inset: Shortening and elongations in the boxed part of Helix E10_1 for two calcaronean sequences and one calcinean sequence.<p><b>Copyright information:</b></p><p>Taken from "Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera"</p><p>http://www.biomedcentral.com/1471-2148/8/69</p><p>BMC Evolutionary Biology 2008;8():69-69.</p><p>Published online 27 Feb 2008</p><p>PMCID:PMC2289807.</p><p></p

    Evolution of morphological characters.

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    <p>A: Organization of the aquiferous system; B: Evolution of a cortex. Tree topology identical to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0033417#pone-0033417-g003" target="_blank">Fig. 3</a>.</p

    A pseudosagittal spicule and a subatrial sagittal spicule, shown in their orientation in the skeleton of Heteropiidae.

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    <p>The arrows point at the unpaired angles. pa: paired actine; ua: unpaired actine. Pseudosagittal spicules have an appearance similar to sagittal spicules but their paired actines are of different sizes, with one being more similar to the unpaired actine than to the other paired actine. The latter points towards the atrium.</p

    Fiber SMF-28 Datasheet

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    <p>The hypothesis (constrained monophyly) can be rejected for p-values <0.05.</p

    Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera-0

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    of this fragment were considered (n = 123). Note that (Hexactinellida, [GenBank: ]) is an incomplete potential pseudogene sequence.<p><b>Copyright information:</b></p><p>Taken from "Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera"</p><p>http://www.biomedcentral.com/1471-2148/8/69</p><p>BMC Evolutionary Biology 2008;8():69-69.</p><p>Published online 27 Feb 2008</p><p>PMCID:PMC2289807.</p><p></p

    Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera-3

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    Ve the 90% consensus level but differ from nucleotides are shown with an arrow pointing to their corresponding position. Specific insertions for that are atypical for demosponges are displayed in shaded frames. Outlined frames highlight the regions of insertion within Haplosclerida that are displayed as sketches in Fig. 6. Inset: 90% consensus sequence and structure of partial helix 43 for 76 demosponges that do not belong to the marine haplosclerids.<p><b>Copyright information:</b></p><p>Taken from "Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera"</p><p>http://www.biomedcentral.com/1471-2148/8/69</p><p>BMC Evolutionary Biology 2008;8():69-69.</p><p>Published online 27 Feb 2008</p><p>PMCID:PMC2289807.</p><p></p

    Bayesian phylogeny of Calcarea inferred with the RNA7A model for partition stem.

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    <p>Outgroup taxa not shown (compare <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0033417#pone.0033417.s004" target="_blank">Figs. S4</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0033417#pone.0033417.s005" target="_blank">S5</a>). Support values are given at the nodes (PP/BS of ML analyses under the same model). Clades are shaded and numbered for taxa that are not monophyletic. Order names are abbreviated: BAE‚Ää=‚ÄäBaerida; CLAT‚Ää=‚ÄäClathrinida; LEUC‚Ää=‚ÄäLeucosolenida; LITH‚Ää=‚ÄäLithonida; MUR‚Ää=‚ÄäMurrayonida. Insert: ML topologies of two clades that differ from Bayesian inference (with BS values).</p

    Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera-2

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    He insertions are predicted to form two helices in Hexasterophora (Lyssacinosida + Hexactinosida), and one helix in Amphidiscophora (). *Note that (AF159623) represents an (in other than the displayed part) incomplete, potential pseudogene molecule.<p><b>Copyright information:</b></p><p>Taken from "Molecular evolution of rDNA in early diverging Metazoa: First comparative analysis and phylogenetic application of complete SSU rRNA secondary structures in Porifera"</p><p>http://www.biomedcentral.com/1471-2148/8/69</p><p>BMC Evolutionary Biology 2008;8():69-69.</p><p>Published online 27 Feb 2008</p><p>PMCID:PMC2289807.</p><p></p

    Organization of choanoskeleton.

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    <p>A: inarticulated (<i>Sycettusa</i> aff. <i>hastifera</i>); B: articulated (<i>Grantessa</i> sp. GW974).</p

    Different organizations of the aquiferous system in Calcarea.

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    <p>A: asconoid (<i>Soleneiscus radovani</i>); B: syconoid (<i>Sycon coronatum</i>, from Helgoland, Germany); C: sylleibid (<i>Grantiopsis cylindrica</i>); D: leuconoid (<i>Leucettusa</i> sp. 1). Thin arrows illustrate the direction of water flow in A, B and C. atr‚Ää=‚Ääatrium; chc‚Ää=‚Äächoanocyte chambers; cx‚Ää=‚Ääcortex; eh‚Ää=‚Ääexhalant channel; ext: exterior of the sponge; ih‚Ää=‚Ääinhalant channel; spt‚Ää=‚Ääspicule tract of modified triactines.</p
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