FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term polytene chromosome ID (Ontology) GO:0005700 (Gene Ontology)
Definition A type of chromosome in a polyploid cell, formed when multiple copies of homologous chromosomes are aligned side by side to give a giant chromosome in which distinct chromosome bands are readily visible.[ ISBN:0198506732 ]
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  QuickGO data     AmiGO data
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     101
Genes (FBgn)  GO_CELLULAR_COMPONENT     160
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      31
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Constructs
 polytene chromosome (all annotations which use CV term, excluding "NOT" statements)     101    160     31
     colocalizes_with | polytene chromosome       --       7       --
     is_active_in | polytene chromosome       --       1       --
     located_in | polytene chromosome       --     154       --
     polytene chromosome | germline clone       1       --       --
     polytene chromosome | heat sensitive       4       --       4
     polytene chromosome | larval stage       6       --       3
     polytene chromosome | larval stage | male       4       --       2
     polytene chromosome | larval stage | male limited | temperature conditional       2       --       2
     polytene chromosome | male      10       --       1
     polytene chromosome | male limited       2       --       --
     polytene chromosome | third instar larval stage      16       --      14
Spanning Tree (Parents/Children)
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  intracellular membraneless organelle
   |__chromosome
       |__polytene chromosome  375 rec.
           |__polytene chromosome band 38 rec.
           |__polytene chromosome chromocenter 29 rec.
           |   |__alpha-heterochromatin 2 rec.
           |   |__beta-heterochromatin 2 rec.
           |__polytene chromosome ectopic fiber
           |__polytene chromosome interband 44 rec.
           |__polytene chromosome puff 68 rec.
           |__polytene chromosome weak point 1 rec.
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Wikipedia:Polytene_chromosome