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Multi-chromosomal location of ribosomal RNA genes and heterochromatin association in brown trout

Chromosome Research volume 1, pages 63–67 (1993)Cite this article

Abstract

The ribosomal rRNA genes have been mapped by fluorescentin situ hybridization (FISH) to brown trout chromosomes. One major NOR chromosome pair and 8 novel minor NOR chromosome pairs have been found. Both major and minor NORs were closely related to polymorphic heterochromatin, as revealed by FISH and C-banding. These results are discussed with respect to NOR expression, the relationship between rDNA and heterochromatin, and evolutionary aspects.

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Authors and Affiliations

  1. the Departmento de Biologia Funcional, Area de Genetica, Facultad de Medicina, Universidad de Oviedo, 33006, Oviedo, Spain

    Alberto M. Pendás, Paloma Morán & Eva García-Vázquez

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  1. Alberto M. Pendás
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  2. Paloma Morán
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  3. Eva García-Vázquez
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Pendás, A.M., Morán, P. & García-Vázquez, E. Multi-chromosomal location of ribosomal RNA genes and heterochromatin association in brown trout. Chromosome Res 1, 63–67 (1993). https://doi.org/10.1007/BF00710608

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  • DOI: https://doi.org/10.1007/BF00710608

Key words

  • brown trout
  • fluorescentin situ hybridization
  • heterochromatin
  • rDNA