FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term spermatid cyst ID (Ontology) FBbt:00005287 (Fly Anatomy)
Definition A male germline cyst consisting of 2 cyst cells and 64 spermatids.[ FlyBase:FBrf0064778 ]
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Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      77
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      17
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      23
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 spermatid cyst (all annotations which use CV term, excluding "NOT" statements)      77     10     17     27
     spermatid cyst | germline clone       1       --       --       --
     spermatid cyst | increased number       1       --       1       --
     spermatid cyst | progressive | temperature conditional       1       --       --       --
     spermatid cyst | spermatogenesis       4       --       --       --
     spermatid cyst | temperature conditional       1       --       --       --
Spanning Tree (Parents/Children)
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germline cyst____________________
male-specific anatomical entity__|
                                 male germline cyst
                                  |__spermatid cyst  1189 rec.
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Is a male germline cyst
Develops from secondary spermatocyte cyst
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