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Genetica

, Volume 122, Issue 3, pp 253–260 | Cite as

Molecular characterization of the 5S ribosomal gene of the Bradysia hygida(Diptera:Sciaridae)

  • Lucinéia De fátima chasko ribeiro
  • Maria Aparecida fernandez
Article

Abstract

The rRNA genes are amongst the most extensively studied eukaryotic genes. They contain both highly conserved and rapidly evolving regions. The aim of this work was to clone and to sequence the Bradysia hygida 5S rDNA gene. A positive clone was sequenced and its 346 bp sequence was analyzed against the GenBank database. Sequence analysis revealed that the B. hygida 5S (Bh5S) rDNA gene is 120 bp long and is 87% identical to the aphid Acyrthosiphon magnoliae 5S rDNA gene. The Bh5S rDNA gene presents two unusual features: a GG pair at the 5' end of the gene sequence and the localization of the polyT signal immediately after the 3' end of the gene. In situ5S hybridization experiments revealed that the Bh5S rDNA gene is localized in the autosomal A chromosome

Bradysia hygida in situ hybridization sequence data Sciaridae 5S ribosomal gene 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Lucinéia De fátima chasko ribeiro
    • 1
  • Maria Aparecida fernandez
    • 1
  1. 1.Departamento de Biologia Celular e GenéticaUniversidade Estadual de MaringáBrasil

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