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Multi-chromosomal Location of Ribosomal RNA Genes and Heterochromatin Association in Brown Trout

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Journal Chromosome Res
Date 1993 May 1
PMID 8143090
Citations 27
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Abstract

The ribosomal rRNA genes have been mapped by fluorescent in 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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