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báo cáo khoa học: "Low frequency of inversion-carrying chromosomes in a population of Drosophila melanogaster from a cellar habitat"

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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Low frequency of inversion-carrying chromosomes in a population of Drosophila melanogaster from a cellar habitat | Génét. Sél. Evol. 1987 19 3 297-306 Low frequency of inversion-carrying chromosomes in a population of Drosophila melanogaster from a cellar habitat Ana GONZALEZ and J.L. MÉNSUA Depạrtạmento de Genética FacultaddeCiencias Biologicas Universidad de Valencia Dr. Moliner 50 Burjassot Valencia Spain Summary The inversions of the 3rd chromosome are studied in 2 neighbouring populations of Drosophila melanogaster one from a cellar habitat and the other from a vineyard outside. The cellar population shows a lower frequency of chromosomes with inversions than the outside population. In the cellar the average homozygote viability for inversion-carrying chromosomes is smaller than for inversion-free chromosomes. In the vineyard population there are no differences between the 2 types of chromosomes. Key words Drosophila melanogaster inversion adaptability viability cellar. Resume Faible frequence de chromosomes avec inversion dans une population de Drosophila melanogaster d un habitat de cave On a étudié les inversions du 3e chromosome de 2 populations voisines de Drosophila melano-gaster I une d un habitat de cave et 1 autre d un vignoble. La population de la cave présente une plus faible frequence de chromosomes avec inversion que la population extérieure. En cave les chromosomes avec inversion sont moins viables à rétat homozygote que les chromosomes sans inversion. Dans la population extérieure il n existe pas de difference de viabilité entre les 2 types de chromosomes. Mots clés Drosophila melanogaster inversion adaptabilité viabilité cave. I. Introduction Drosophila melanogaster is a chromosomally polymorphic species as has been confirmed in various natural populations by many workers in this field Ashburner Lemeunier 1976 Choi 1977 Mettler et al. 1911 Inoue Watanabe 1979 Paik 1979 Zacharopoulou Pelecanos 1980 Knibb et al. 1981 Inoue et al. 298 Ana GONZALEZ J.L. MÉNSUA 1984 . Particular studies in this species suggest that the presence or absence of chromosomal .

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