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Some unusual small-subunit ribosomal RNA sequences of metazoans. American Museum novitates ; no. 3337

Show simple item record Giribet, Gonzalo. en_US Wheeler, Ward. en_US 2005-10-06T16:41:55Z 2005-10-06T16:41:55Z 2001 en_US
dc.description 14 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 12-14). en_US
dc.description.abstract The SSU rRNA gene is one of the most widely utilized loci for phylogenetic inference among eukaryotic organisms. Although they have an average length of 1800 to 1900 bp, several unusually large 18S rDNA sequences have been reported. After examining GenBank sequences and 180 new 18S rRNA sequences from several metazoan groups, we report many other extraordinary sequences ranging between ca. 1350 bp (in symphylan myriapods) to ca. 3300 bp (in some strepsipteran insects). Myriapods are particularly interesting, having independently evolved extraordinary sequences in the four classes (Chilopoda, Diplopoda, Symphyla, and Pauropoda). An insertion event of ca. 300 bp has been detected in all but the most basal family of geophilomorphan centipedes. Other major insertions are also found in other arthropod groups, in onychophorans, molluscs, chaetognaths, echinoderms, and parasitic platyhelminths. The use of information derived from secondary structure predictions combined with a new method to analyze DNA sequence data without multiple sequence alignments is proposed as a solution for analyzing sequence data that possess alternatively conservative and variable regions, such as ribosomal genes. en_US
dc.format.extent 298565 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, NY : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 3337 en_US
dc.subject.lcc QL1 .A436 no.3337 2001 en_US
dc.subject.lcsh Metazoa -- Phylogeny. en_US
dc.subject.lcsh RNA. en_US
dc.subject.lcsh Phylogeny. en_US
dc.subject.lcsh Metazoa -- Molecular genetics. en_US
dc.subject.lcsh Ribosomes. en_US
dc.title Some unusual small-subunit ribosomal RNA sequences of metazoans. American Museum novitates ; no. 3337 en_US
dc.title.alternative Metazoan RNA sequences en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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