Nucleolus organizer regions and heterochromatin in the zebu (Bos indicus L.)

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1987 English Publisher:Springer Science and Business Media LLCJournal:Theoretical and Applied Genetics, volume 73, pages 832-835 (issn: 0040-5752, eissn: 1432-2242,

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Authors: B, Mayr; K, Gruber;

doi: 10.1007/bf00289387

pmid: 24241292

Nucleolus organizer regions and heterochromatin in the zebu (Bos indicus L.)

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Abstract

Ag-NOR staining and a counterstain enhanced fluorescence technique (chromomycin A3/distamycin A/DAPI-staining = CDD-method) and G-banding, respectively, have been applied to the zebu (Bos indicus L.) chromosomes. The nucleolus organizer regions (NORs) were found in the telomeric regions of chromosomes nos. 2, 3, 4, 11, and 28. CDD staining led to a well-defined R-banding pattern along the chromosome arms and to the visualization of centric heterochromatic bands of variable sizes.

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