Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Hobo elements and their deletion-derivative sequences in Drosophila melanogaster and its sibling species D simulans, D mauritiana and D sechellia | Genet Sei Evol 1990 22 393-402 Elsevier INRA 393 Original article Hobo elements and their deletion-derivative sequences in Drosophila melanogaster _ _ _ and its sibling species D simulans D mauritiana and D sechellia G Periquet1 M-H Hamelin1 R Kalmes1 J Eeken2 1 Faculte des Sciences Institut de BiocénotịqueExpérimentale des Agrosystèmes Parc Grandmont 37200 Tours France 2 University of Leiden Department of Radiation Genetics and Chemical Mutagenesis Sylvius Laboratories Wassenaarseweg 72 Leiden The Netherlands Received 28 May 1990 accepted 6 September 1990 Summary - Hobo elements are a family of transposable elements found in Drosophila melanogaster which present a specific deletion-derivative element Th in the majority of the current natural populations. Present data has resolved the Th element into two elements Thl 1 510 bp and Th2 1 490 bp and specified the regions within which the deletion breakpoints lie. Hobo homologous sequences were analysed in the sibling species D simulans D mauritiana and D sechellia. In the full-sized element a Ptiull site was shown in D simulans and D mauritiana as it exists in D melanogaster but was not observed in D sechellia. Specific deleted-derivative elements were also characterized for the three sibling species h del sim 1 080 bp h del maur and h del sech 1130 bp each and their breakpoint regions plotted on a restriction map. The functioning of these elements is discussed. hobo I transposable element evolution Drosophila melanogaster complex Resume - Les elements transposables hobo et leurs derives délétés chez D melanogaster et chez les espèces jumelles D simulans D mauritiana et D sechellia. La famille des éléments transposables hobo existe chez Drosophila melanogaster et présente une classe specifique d elements deletes Th observes dans la majorite des populations actuelles. Cette classe d eUments a été résolue en 2 sous ensembles éléments Thl 1 510 pb et Thổ 1 490 pb dont les régions de délétion interne ont été précisées. .
