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Genetics and Molecular Biology

Print version ISSN 1415-4757On-line version ISSN 1678-4685


SASSI, Adriana Koslovski et al. Transposable elements P and gypsy in natural populations of Drosophila willistoni. Genet. Mol. Biol. [online]. 2005, vol.28, n.4, pp.734-739. ISSN 1415-4757.

The presence and integrity of the P transposon and the gypsy retrotransposon in the genome of 18 samples of natural Drosophila willistoni populations collected from a large area of South America were Southern blot screened using Drosophila melanogaster probes. The aim of this screening was provide further knowledge-base on the geographical distribution of D. willistoni and to carry out an inter-population analysis of the P and gypsy elements present in the genomes of the populations analyzed. The fragment patterns obtained indicate that both the P and gypsy elements are ancient in the D. willistoni genome, but whereas the gypsy retroelement appears to be invariable and stable the P element varies between populations and appears to still have some capacity for mobilization.

Keywords : Drosophila willistoni; transposable element; P; gypsy.

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