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    Mitochondrial genomes of Clymenella torquata (Maldanidae) and Riftia pachyptila (Siboglinidae) : evidence for conserved gene order in Annelida

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    344.R1Jennings.pdf (1.238Mb)
    Date
    2004-10-04
    Author
    Jennings, Robert M.  Concept link
    Halanych, Kenneth M.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/680
    As published
    https://doi.org/10.1093/molbev/msi008
    Keyword
     Phylogeny; Gene order; Mitochondria; Genome; Annelida 
    Abstract
    Mitochondrial genomes are useful tools for inferring evolutionary history. However, many taxa are poorly represented by available data. Thus, to further understand the phylogenetic potential of complete mitochondrial genome sequence data in Annelida (segmented worms), we examined the complete mitochondrial sequence for Clymenella torquata (Maldanidae) and an estimated 80% of the sequence of Riftia pachyptila (Siboglinidae). These genomes have remarkably similar gene orders to previously published annelid genomes, suggesting that gene order is conserved across annelids. This result is interesting given the high variation seen in the closely related Mollusca and Brachiopoda. Phylogenetic analyses of DNA sequence, amino acid sequence and gene order all support the recent hypothesis that Sipuncula and Annelida are closely related. Our findings suggest that gene order data is of limited utility in annelids but that sequence data holds promise. Additionally, these genomes show AT bias (~66%) and codon usage biases, but have a typical gene complement for bilaterian mitochondrial genomes.
    Description
    Author Posting. © The Authors, 2004. This is the author's version of the work. It is posted here by permission of Society for Molecular Biology and Evolution for personal use, not for redistribution. The definitive version was published in Molecular Biology and Evolution 22 (2005): 210-222, doi:10.1093/molbev/msi008.
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    Suggested Citation
    Preprint: Jennings, Robert M., Halanych, Kenneth M., "Mitochondrial genomes of Clymenella torquata (Maldanidae) and Riftia pachyptila (Siboglinidae) : evidence for conserved gene order in Annelida", 2004-10-04, https://doi.org/10.1093/molbev/msi008, https://hdl.handle.net/1912/680
     

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