tailieunhanh - báo cáo khoa học: "Allozyme variation in fourteen natural populations of Drosophila melanogaster collected from different regions of France"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Allozyme variation in fourteen natural populations of Drosophila melanogaster collected from different regions of France | Génét. Sél. Evol. 1985 17 2 201-210 Allozyme variation in fourteen natural populations . . .f Dros Phjla melanogaster collected from different regions of France Liliane CHARLES-PALABOST Monique LEHMANN and H. MERỌOT Université de Paris VIILaboratoire de GJnetique des Populations Tour 42-32 2 place Jussieu F 75005 Paris Summary We analyzed allozyme variation of 6 gene loci in 14 populations of Drosophila melanogaster originating from different regions of France and captured from fruits of the localities studied cellars excluded with respect to these 6 loci the populations are not genetically homogeneous. Allelic frequencies at the Adh locus are correlated with latitude and at the Est-6 with the kind of fruit in the habitats. In spite of the heterogeneity of these 14 new populations the comparison between them and 15 other French populations collected 9 or 10 years ago in cellars shows a remarkable similarity in the genetical composition of 4 loci among the 5 compared. Thus the different habitats of these populations are not variable enough to enable much genetic differentiation. Key words Drosophila melanogaster biochemical polymorphism French natural populations. Resume Polymorphisme biochimique de quatorze populations naturelles de Drosophila melanogaster capturées dans differentes regions de France Le polymorphisme de 6 locus enzymatiques a ệté analyse dans 14 populations de Drosophila melanogaster reparties du Nord au Sud de la France et capturees sur des fruits caves à vin exclues . Un cline de frequences avec la latitude a été mis en evidence au locus de VAdh. Pour l Esi-6 les frequences alléliques semblent dépendre de la nature du fruit de piégeage. Malgré 1 hétérogénệité de ces 14 nọuvelles populations la comparaison de nos résultats avec ceux concernant 15 autres populations íranọaises capturées dans des caves à vin 9 OU 10 ans plus tôt révèle une remarquable similitude dans la structure génétique de 4 des 5 locus compares. Par consequent ces populations .