A transposable element can drive the concerted evolution of tandemly repetitious DNA

Dianne Thompson-Stewart, Gary H. Karpen, Allan C. Spradling

Research output: Contribution to journalArticle

Abstract

Recombination and conversion have been proposed to drive the concerted evolution of tandemly repeated DNA sequences. However, specific correction events within the repeated genes of multicellular organisms have not been observed directly, so their nature has remained speculative. We investigated whether the excision of transposable P elements from tandemly repeated sequences would induce unequal gene conversion. Genetically marked elements located in a subtelomeric repeat were mobilized, and the structure of the region was analyzed in progeny. We observed that the number of repeats was frequently altered. Decreases were more common than increases, and this bias probably resulted from intrinsic mechanisms governing P element-induced double-strand break repair. Our results suggest that transposable elements play an important role in the evolution of repetitions DNA.

Original languageEnglish (US)
Pages (from-to)9042-9046
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume91
Issue number19
DOIs
StatePublished - Sep 13 1994
Externally publishedYes

ASJC Scopus subject areas

  • Genetics
  • General

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