SO Accession: SO:0002257 (SOWiki)
Definition: Cytologically observable heterochromatic regions of chromosomes away from centromeres that contain predominatly large tandem repeats and retrotransposons.
Synonyms: Heterochromatin Knob
DB Xrefs: PMID: 6439888  

Parent: repeat_region (SO:0000657)
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Graph image for SO:0002257