FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term stage 11 embryo ID (Ontology) FBbt:00005325 (Fly Anatomy)
Definition Stage 11 begins with the invagination of the tracheal placodes. Para-segmental furrows form and segment boundary furrows become deep folds. Within the head, gnathal protuberances become apparent. The end of this stage is signalled by the appearance of a distinct cleft at the posterior pole of the embryo, which becomes detached from the vitelline membrane. This marks the beginning of germ band retraction. Duration at 25 degrees C: approximately 120 minutes (320-440 minutes after egg laying).[ FlyBase:FBrf0089570 ]
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 stage 11 embryo (all annotations which use CV term, excluding "NOT" statements)      10
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  extended germ band embryo
   |__late extended germ band embryo
       |__stage 11 embryo  14 rec.
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Is a late extended germ band embryo
Develops from stage 10 embryo
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Synonyms
  • "Segmented germ band stage" RELATED
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