FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic stage 1 ID (Ontology) FBdv:00005291 (Fly Development)
Definition The embryonic stage that lasts from the end of fertilization to the end of the second nuclear division. Duration at 25 degrees C: approximately 25 minutes (0-25 minutes after egg laying).[ FlyBase:FBrf0064779 FlyBase:FBrf0089570 ]
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 Alleles Genes Insertions Constructs
 embryonic stage 1 (all annotations which use CV term, excluding "NOT" statements)       --
     abnormal mitotic cell cycle | embryonic stage 1
      --       --       --
     abnormal mitotic cell cycle | embryonic stage 1 | paternal effect
      --       --
     embryo | embryonic stage 1
      --       --       --
     embryo | embryonic stage 1 | paternal effect
      --       --
     mitotic cell cycle | embryonic stage 1
      --       --
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Vocabulary search 
cleavage stage
 |__pre-blastoderm stage__
developmental stage       |
 |__pre-blastoderm stage__|
                          embryonic stage 1  4349 rec.
                           |__embryonic cycle 1 6 rec.
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Substage of pre-blastoderm stage
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