Abstract
Abstract Information about the distribution and insertion numbers of many transposable elements is restricted to few speciesof Drosophila , although these elements are widely distributed throughout the genus . The aim of this work was to de-scribe the distribution and insertion numbers of four retrotransposons ( copia , gypsy , micropia , I ) and four trans-posons ( hobo , mariner , Minos and Bari-1 )inthe saltans group of Drosophila. Our data shows that, except for mariner , all the other elements are widespread within the saltans group and show variable insertion numbers of up to24 copies. Key words: Drosophila , genomic insertion, saltans group, retrotransposons, transposons.Received: March 11, 2005; Accepted: September 20, 2005. Introduction Transposable elements are a major component of thegenomes of most species and are widespread throughoutthe genus Drosophila. Most of our knowledge on trans-posable elements in Drosophila comes from studies car-ried out in natural populations of
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