Evolutionary conservation and molecular characteristics of repetitive sequences of drosophila koepferae

Ignacio Marín, Antonio Fontdevila

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11 Citations (Scopus)

Abstract

Thirteen middle repetitive DNA clones obtained from the genome of Drosophila koepferae have been tested for their evolutionary Conservation in the other seven species of the buzzatii and martensis clusters (repleta group). All but two of these clones exhibit qualitatively similar patterns of hybridization in the eight species. The average interspecific hybridization signal is 85 per cent of that found intraspecifically, ranging from 73 to 93 per cent. Partial sequencing of six of these clones has shown sequences related to the retrotransposon Gypsy, first charac- terized in D. melanogaster, as well as to the Anopheles gambiae LINE elements TIAg and Q. A fragment of a hitherto unknown, short inverted repeat transposable element has also been found. The evolutionary Conservation of repetitive D. koepferae sequences seems to be related to the high proportion of simple DNA and inactive mobile elements in the genome of this species. © 1996 The Genetical Society of Great Britain.
Original languageEnglish
Pages (from-to)355-366
JournalHeredity
Volume76
Issue number4
DOIs
Publication statusPublished - 19 Jun 1996

Keywords

  • Drosophila
  • Gypsy
  • LINE
  • Repetitive DNA
  • Repleta group

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