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A marked ring-Y-chromosome in Drosophila hydei with a new type of white variegation

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Abstract

A ring-Y chromosome, R(Y)w m, of D. hydei is described which carries a complete set of fertility genes, a NOR region and a small X-chromosomal insertion (w m), which may be used as a marker. The ring has been characterized by various staining techniques. It was derived from a w mCo Y chromosome by X-ray treatment of spermatocytes. Its mode of origin allows to fix the gene order in the distal region of the long arm of the w mCoY chromosome. The white + gene included in the ring shows a new type of position-effect variegation which is described and discussed in the context of an earlier hypothesis on a dual function of the white locus.

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Correspondence to F. M. A. van Breugel.

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Beck, H., van Breugel, F.M.A. & Srdić, Ž. A marked ring-Y-chromosome in Drosophila hydei with a new type of white variegation. Chromosoma 71, 1–14 (1979). https://doi.org/10.1007/BF00426363

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Keywords

  • Developmental Biology
  • Gene Order
  • Dual Function
  • Distal Region
  • Staining Technique