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Enzymatic variation at seven loci in nine natural populations of Drosophila melanogaster

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Abstract

Allozyme polymorphisms at seven loci have been studied in nine natural populations of Drosophila melanogaster from the Saône and Rhône valleys sampled in 1973 and 1974. A great deal of polymorphism was observed; an individual was on the average heterozygous at 20.2% of its loci. The populations were genetically very homogeneous throughout the region sampled. The number of ovariolae per female varied from one group of populations to another depending on their geographical separation. Yet the number of ovariolae remained constant from one year to the next. The results show that migration alone cannot explain the homogeneity of the allozyme frequencies. It seems reasonable to conclude that selection plays a major role in maintaining the homogeneity of populations living in proximal biotopes.

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Authors and Affiliations

  1. Laboratoire de Génétique des Populations, Université Paris VII, Paris, France

    P. Girard, L. Palabost & C. Petit

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  1. P. Girard
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  2. L. Palabost
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  3. C. Petit
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Additional information

E.R.A. No. 406: “Analyse et mécanismes de maintien du polymorphisme.”

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Girard, P., Palabost, L. & Petit, C. Enzymatic variation at seven loci in nine natural populations of Drosophila melanogaster . Biochem Genet 15, 589–599 (1977). https://doi.org/10.1007/BF00520200

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  • DOI: https://doi.org/10.1007/BF00520200

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