TAILIEUCHUNG - báo cáo khoa học: "Variation of allozyme frequencies in Spanish field and cellar populations of D. melanogaster"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Variation of allozyme frequencies in Spanish field and cellar populations of D. melanogaster | Génét. Sél. Evol. 1985 17 4 435-442 Variation of allozyme frequencies in Spanish field and cellar populations of D. melanogaster Angeles ALONSO-MORAGA A. MUNOZ-SERRANO and A. RODERO Departamento de Genética Facultad de Veterinaria Universidad de Cordoba Av. Medina Azahara 9 14005 Cordoba Spain Summary Polymorphism at the Adh a-Gpdh and Est-6 loci have been studied in 12 populations from the Southern Iberian peninsula coming from different environments in which alcohol is absent or present fields and wine cellars . Finetti diagrams analyses of linkage disequilibrium and analyses of gene frequencies show that the determining locus for the genetic variation in these populations is Adh. Neither the a-Gpdh locus which is on the same chromosome as the Adh locus 2L nor the Est-6 locus is influenced by different environments in which the determining factor is the presence or absence of alcohol in the medium. Key words Drosophila melanogaster allozyme polymorphism Adh a-Gpdh Est-6 ecological niches alcohol. Résumé Variation des frequences alloenzymatiques de populations espagnoles de D. melanogaster provenant de celliers et de la campagne Le polymorphisme des locus Adh a-Gpdh et Est-6 a été étudié dans 12 populations de Drosophila melanogaster provenant du sud de la péninsule ibérique Ces populations vivent dans differents milieux caractérisés par la presence populations de caves OU 1 absence populations de campagne d alcool. Les diagrammes de F1NETTI 1 analyse des déséqụilibres de liaison et des frequences alléliques montrent que le locus Adh est détérminant dans la variation génétique des 12 populations analysées. Ni le locus a-Gpdh sur le même chromosome que rxd i ni l Est-6 ne sont influences par la présence OU 1 absence d alcool du milieu. Mots clés Drosophila melanogaster polymorphisme alloenzymatique Adh Est-6 a-Gpdh niches écologiques alcool. I. Introduction Some ecological models such as those of Levene 1953 and Li 1955 have been proposed to explain the maintenance

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