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      The complete mitochondrial genome of Dugesia japonica (Platyhelminthes; order Tricladida).

      Zoological science
      Animals, Base Sequence, Genetic Variation, Genome, Mitochondrial, Molecular Sequence Data, Platyhelminths, genetics, RNA, Transfer

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          Abstract

          We used two sequencing methods, namely long polymerase chain reaction (PCR) and primer walking, to determine the complete mitochondrial DNA (mtDNA) sequence of Dugesia japonica and most of the mtDNA sequence of Dugesia ryukyuensis. The genome of D. japonica contained 36 genes including 12 of the 13 protein-coding genes characteristic of metazoan mitochondrial genomes, two ribosomal RNA genes, and 22 transfer RNA genes. The genome of D. ryukyuensis contained 33 genes, including 12 protein-coding genes, two ribosomal RNA genes, and 19 transfer RNA genes. The gene order of the mitochondrial genome from the Dugesia species showed no clear homology with either the Neodermata or other free-living Rhabditophora. This indicates that the platyhelminths exhibit great variability in mitochondrial gene order. This is the first complete sequence analysis of the mitochondrial genome of a free-living member of Rhabditophora, which will facilitate further studies on the population genetics and genomic evolution of the Platyhelminthes.

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          Author and article information

          Journal
          23030340
          10.2108/zsj.29.672

          Chemistry
          Animals,Base Sequence,Genetic Variation,Genome, Mitochondrial,Molecular Sequence Data,Platyhelminths,genetics,RNA, Transfer

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