Abstract:Ruditapes philippinarum and Mercenaria mercenaria are economically important bivalve species. The complete ribosomal DNA (rDNA) unit sequences of R. philippinarum and M. mercenaria, with as-sembled rDNA unit lengths of 12,910 and 12,100 bp, respectively, were obtained in this study for the first time. The rDNA unit structural organisation was similar to that in other eukaryotes, in-cluding the following elements in order: 18S rRNA-internal transcribed spacer 1 (ITS1); 5.8S rRNA-ITS2-28S rRNA-intergenic spacer … Show more
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