title: Polymorphism in structure of the retrotransposable element 412 in Drosophila simulans and D. melanogaster populations.
abstract: The structure of the 412 retrotransposable element was investigated in various natural populations of D. melanogaster and D. simulans by a restriction enzyme analysis. We show that although the canonical structure of the 412 element was the same in both species, a high structural polymorphism existed with various rearranged elements. A 412 family was thus composed of heterogeneous copies of different sizes, with a large proportion of full-size copies. D. simulans had more rearranged copies than D. melanogaster, with some specific copies, such as a 5.6-kb BsrBI fragment, present in all populations of D. simulans. Full-size and rearranged copies were detected in both the euchromatin and the heterochromatin, with many rearranged copies in D. simulans, suggesting a recent mobilization of the 412 element in this species.
authors.affiliation: Laboratoire de Biométrie, Génétique, Biologie des populations, UMR C.N.R.S. 5558, Université Lyon 1, 69622, Villeurbanne, France.
authors.forename: G
authors.initials: G
authors.lastname: Cizeron
authors.forename: C
authors.initials: C
authors.lastname: Biémont
mesh_terms: D000818:Animals; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D017353:Gene Deletion; D016678:Genome; D008297:Male; D012150:Polymorphism, Restriction Fragment Length; D015183:Restriction Mapping; D018626:Retroelements / Q000235:genetics*
chemical_list: D018626:Retroelements