FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term primordial germ cell ID (Ontology) FBbt:00000092 (Fly Anatomy)
Definition Cell that begins as a pole cell, becomes incorporated into the gonad and can develop into a germline stem cell (Campos-Ortega and Hartenstein, 1997; Dansereau and Lasko, 2008; Slaidina et al., 2020).[ FlyBase:FBrf0089570 FlyBase:FBrf0101973 FlyBase:FBrf0216027 FlyBase:FBrf0244767 ]
Also Known As "PGC"
Comment Can be identified in the larva by expression of vasa (Slaidina et al., 2020). Only a small subset of pole cells can become germ cells and this fate might be specified by the time the posterior midgut primordium invaginates (Okada, 1998).
Links to External Ontologies
Annotations
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     306
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      15
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      45
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      90
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 Images  Insertions Constructs
 primordial germ cell (all annotations which use CV term, excluding "NOT" statements)     307    285     10      4     60     95
     primordial germ cell | cold sensitive       1       --       --       --       --       --
     primordial germ cell | decreased number | embryonic stage       3       --       --       --       --       3
     primordial germ cell | decreased number | embryonic stage | maternal effect       1       --       --       --       1       --
     primordial germ cell | decreased number | maternal effect       4       --       --       --       --       3
     primordial germ cell | dorsal closure stage       3       --       --       --       --       --
     primordial germ cell | ectopic      13       --       --       --       --      11
     primordial germ cell | ectopic | maternal effect       3       --       --       --       --       --
     primordial germ cell | embryonic cycle 14       2       --       --       --       --       --
     primordial germ cell | embryonic stage      57       --       --       --       4     34
     primordial germ cell | embryonic stage 10 | maternal effect       1       --       --       --       --       --
     primordial germ cell | embryonic stage 11       2       --       --       --       --       --
     primordial germ cell | embryonic stage 12 | maternal effect       1       --       --       --       1       --
     primordial germ cell | embryonic stage 13 | maternal effect       1       --       --       --       1       --
     primordial germ cell | embryonic stage 14       2       --       --       --       --       3
     primordial germ cell | embryonic stage 14 | maternal effect       1       --       --       --       1       --
     primordial germ cell | embryonic stage 15       2       --       --       --       --       3
     primordial germ cell | embryonic stage 15 | maternal effect       1       --       --       --       1       --
     primordial germ cell | embryonic stage 16       2       --       --       --       --       3
     primordial germ cell | embryonic stage 16 | maternal effect       1       --       --       --       1       --
     primordial germ cell | embryonic stage 4       4       --       --       --       1      2
     primordial germ cell | embryonic stage 4 | maternal effect       1       --       --       --       --       --
     primordial germ cell | embryonic stage 5       8       --       --       --       1      6
     primordial germ cell | embryonic stage 5 | maternal effect       1       --       --       --       --       --
     primordial germ cell | embryonic stage | increased number       7       --       --       --       --       8
     primordial germ cell | embryonic stage | increased number | maternal effect       4       --       --       --       --       5
     primordial germ cell | embryonic stage | maternal effect      10       --       --       --       3      4
     primordial germ cell | embryonic stage | non-rescuable maternal effect       1       --       --       --       --       --
     primordial germ cell | embryonic stage | parental effect       2       --       --       --       --       1
     primordial germ cell | germline clone       8       --       --       --       7       --
     primordial germ cell | germline clone | maternal effect      22       --       --       --       2       --
     primordial germ cell | germline clone | rescuable maternal effect       1       --       --       --       1       --
     primordial germ cell | heat sensitive       5       --       --       --       --       --
     primordial germ cell | increased number      10       --       --       --       --       4
     primordial germ cell | increased number | maternal effect       2       --       --       --       --       --
     primordial germ cell | maternal effect      72       --       --       --      11     12
     primordial germ cell | maternal effect | heat sensitive       1       --       --       --       --       --
     primordial germ cell | maternal effect | increased number       2       --       --       --       --       3
     primordial germ cell | non-rescuable maternal effect       7       --       --       --       3       --
Spanning Tree (Parents/Children)
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  cell
   |__germline cell
       |__primordial germ cell  761 rec.
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Is a germline cell
Develops from embryonic pole cell
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Synonyms
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CL:0000301