Multi-chromosomal location of ribosomal RNA genes and heterochromatin association in brown trout
- 1 May 1993
- journal article
- research article
- Published by Springer Nature in Chromosome Research
- Vol. 1 (1) , 63-67
- https://doi.org/10.1007/bf00710608
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.Keywords
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