FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term ommatidial precursor cluster ID (Ontology) FBbt:00001770 (Fly Anatomy)
Definition A cluster of cells in the eye-disc that is the precursor to an adult ommatidium. Eventually there are approximately 750 ommatidial precursor clusters per eye-disc, the first forming at approximately 70hrs before pupation along the morphogenic furrow. A new row of adult ommatidial precursors then emerges from the morphogenic furrow roughly every 1.5 hours.[ FlyBase:FBrf0064798 ]
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 ommatidial precursor cluster (all annotations which use CV term, excluding "NOT" statements)
     ommatidial precursor cluster | anterior | wandering third instar larval stage
      --
      --
     ommatidial precursor cluster | cell autonomous | somatic clone | wandering third instar larval stage
      --       --       --
     ommatidial precursor cluster | cell non-autonomous | somatic clone
      --
      --
     ommatidial precursor cluster | heat sensitive
      --       --
     ommatidial precursor cluster | larval stage | somatic clone
      --       --       --
     ommatidial precursor cluster | P-stage | somatic clone
      --       --       --
     ommatidial precursor cluster | posterior | wandering third instar larval stage
      --
      --
     ommatidial precursor cluster | somatic clone
      --
     ommatidial precursor cluster | somatic clone | wandering third instar larval stage
      --
      --
     ommatidial precursor cluster | third instar larval stage
      --       --
     ommatidial precursor cluster | wandering third instar larval stage
      --       --
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eye disc
 |__eye disc posterior to the morphogenetic furrow__
portion of tissue                                   |
 |__eye disc posterior to the morphogenetic furrow__|
developing material anatomical entity               |
 |__primordium______________________________________|
                                                    ommatidial precursor cluster  348 rec.
                                                     |__early ommatidial precursor cluster 33 rec.
                                                     |   |__mystery cell 32 rec.
                                                     |__eye photoreceptor precursor cell 113 rec.
                                                     |   |__photoreceptor R1 precursor cell 1 rec.
                                                     |   |__photoreceptor R2 precursor cell 6 rec.
                                                     |   |__photoreceptor R3 precursor cell 24 rec.
                                                     |   |__photoreceptor R4 precursor cell 24 rec.
                                                     |   |__photoreceptor R5 precursor cell 5 rec.
                                                     |   |__photoreceptor R6 precursor cell 1 rec.
                                                     |   |__photoreceptor R7 precursor cell 4 rec.
                                                     |   |__photoreceptor R8 precursor cell 7 rec.
                                                     |__five-cell ommatidial precursor cluster 14 rec.
                                                     |__four cone-cell ommatidial precursor cluster 12 rec.
                                                     |__immature eight-cell ommatidial precursor cluster
                                                     |__mature eight-cell ommatidial precursor cluster 6 rec.
                                                     |__two cone-cell ommatidial precursor cluster
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Is a primordium
Part of eye disc posterior to the morphogenetic furrow
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Synonyms
  • "ommatidial cluster" RELATED
Secondary IDs
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