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Comparative studies of allozyme loci in Drosophila simulans and Drosophila melanogaster. I. Three dipeptidase loci

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Abstract

Genetic variation at three dipeptidase loci (Dip-A, Dip-B, and Dip-C) in Drosophila simulans was analyzed by starch gel electrophoresis. Dip-A was found to be polymorphic in four populations, while Dip-B and Dip-C were found to be polymorphic in one. The numbers of different alleles found at each respective locus were: Dip-A, two; Dip-B, two; and Dip-C, three. Dip-A was genetically mapped at 57.9 on the second chromosome, and Dip-B and Dip-C at 80.9 and 87.9 on the third chromosome, respectively. Neither Dip-B nor Dip-C has been mapped in D. melanogaster because both loci are apparently monomorphic. Their map positions in D. simulans with respect to flanking markers whose homologous genes have been cytogenetically localized in D. melanogaster suggested that they might be mapped cytogenetically by using available deficiencies in D. melanogaster. Accordingly, by the construction of interspecific hybrids which carried deficiencies of melanogaster and an allele of simulans with a mobility different from that of the fixed melanogaster allele, Dip-B and Dip-C were localized between 87F12-14 and 88C1-3 and between 87B5-6 and 87B8-10, respectively, in the salivary gland chromosomes of D. melanogaster. The similarity between these two species is discussed on the basis of these findings.

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Author notes

  1. Seido Ohnishi

    Present address: National Institute of Genetics, Mishima, Japan

Authors and Affiliations

  1. Laboratory of Animal Genetics, National Institute of Environmental Health Sciences, 27709, Research Triangle Park, North Carolina

    Seido Ohnishi & Robert A. Voelker

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  1. Seido Ohnishi
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  2. Robert A. Voelker
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Ohnishi, S., Voelker, R.A. Comparative studies of allozyme loci in Drosophila simulans and Drosophila melanogaster. I. Three dipeptidase loci. Biochem Genet 19, 75–85 (1981). https://doi.org/10.1007/BF00486138

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  • DOI: https://doi.org/10.1007/BF00486138

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