“…A similar result was obtained with the cellular slime mold, Dyctyostelium discoideum, where five to six copies of the Dirsl transposon were found inserted into the unique region of the same element (Capello, Cohen & Lodish, 1984). In addition, recent investigations carried out in vertebrates (Bernardi, 1989;Rynditch et al, 1991), plants (Capel et al, 1993), and yeast (Moore et al, 1993) have demonstrated that some transposable elements are not randomly distributed in the genomes. Moreover, a group of Drosophila retrotransposons (gypsy, 17.6 and 297) apparently prefer the target sequences TAC/TA and ATAT (Bingham & Zachar, 1979).…”