FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term alpha-heterochromatin ID (Ontology) GO:0005723 (Gene Ontology)
Definition A small, compact region of heterochromatin located in the middle of the polytene chromosome chromocenter, which undergoes little or no replication during polytenization.[ PubMed:8878678 ]
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Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       1
Genes (FBgn)  GO_CELLULAR_COMPONENT       1
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 Alleles Genes
 alpha-heterochromatin (all annotations which use CV term, excluding "NOT" statements)       1      1
     located_in | alpha-heterochromatin       --       1
Spanning Tree (Parents/Children)
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chromosome, centromeric region
 |__pericentric heterochromatin_______
heterochromatin                       |
 |__pericentric heterochromatin_______|
polytene chromosome                   |
 |__polytene chromosome chromocenter__|
chromocenter                          |
 |__polytene chromosome chromocenter__|
                                      alpha-heterochromatin  2 rec.
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Is a pericentric heterochromatin
Part of polytene chromosome chromocenter
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