tailieunhanh - báo cáo khoa học: "Population genetics of the metabolically related Adh, Gpdh and Tpi polymorphisms in Drosophila melanogaster : II. Temporal and Spatial Variation in an Orchard Population Karen M. NIELSEN A.A. HOFFMANN S.W. McKECHNIE"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Population genetics of the metabolically related Adh, Gpdh and Tpi polymorphisms in Drosophila melanogaster : II. Temporal and Spatial Variation in an Orchard Population Karen M. NIELSEN . HOFFMANN . McKECHNIE | Génét. Sél. Evol. 1985 17 1 41-58 Population genetics of the metabolically related Adh Gpdh and Tpi polymorphisms in Drosophila melanogaster II. Temporal and Spatial Variation in an Orchard Population Karen M. NIELSEN . HOFFMANN and . McKECHNIE Department of Genetics Monash University Clayton 3168 Victoria Australia Summary Seasonal and spatial variation in gene frequencies at 3 diallelic loci alcohol dehydrogenase Adh glycerophosphate dehydrogenase Gpdh and triosephosphate isomerase 7 Ọ have been studied in an orchard population of D. melanogaster Gene frequency at the Tpi locus varied seasonally and was associated positively with total monthly rainfall measured both immediately prior to and concurrent with the month of collection. Temporal heterogeneity not associated with the environmental parameters was present at the Adh locus. Gpdh-E frequency was negatively associated with mean monthly maximum temperature measured prior to the time of collection. Within the orchard site spatial heterogeneity in gene frequency at the Tpi locus was observed within collections. A deficiency of Gpdh heterozygotes was observed in individual trap samples and among collections with traps pooled. Overall this variation is interpreted as being due to sampling from a population of partially isolated subgroups founded by few individuals and dependent upon transient pockets of fruit resources. Key words Drosophila enzyme polymorphism orchard. Résumé Étude génétique du polymorphisme aux loci d Adh Gpdh et Tpi Chez Drosophila melanogaster. II. Variations temporelles et spatiales dans la population d un verger Les variations saisonniệres et spatiales des frequences géniques ậ 3 locus dialléliques alcool déshydrogénase Adh glycerophosphate déshydrogénase Gpdh et triosephosphate isomerase Tpi ont été étudiées chez D. melanogaster dans une population de verger. La frequence génique au locus de Tpi varie avec la saison et est associée positivement à la pluviométrie mensuelle totale aussi

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