FB2026_03 , released September 17, 2026

CV Term Report

Help Close All Open All

General Information

Term

four cone-cell ommatidial precursor cluster

ID (Ontology)

FBbt:00001775 (Fly Anatomy)

Definition

Ommatidial precursor cluster composed of eight future photoreceptors and four cone cell precursors. The four cone-cell ommatidial precursor cluster is achieved with the apical arrival of the nuclei of the polar and equatorial cone cells that have risen over future photoreceptors R3 and R4 on the polar side and R7 on the equatorial side. At this stage all nuclei are displaced basally. R8 begins to move anteriorly squeezing between R1 and R2, where it will remain through adult life (Cohen, 1993).[ FlyBase:FBrf0064789 ]

Also Known As

"four cone-cell stage ommatidial cluster"

Comment

Links to External Ontologies

Annotations

Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

Results list data from multiple species. Choose a record type above to open its HitList.

Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Alleles (FBal)	PHENOTYPE_MANIFEST_IN
Constructs (FBtp)	PHENOTYPE_MANIFEST_IN

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Alleles	Genes	Constructs
four cone-cell ommatidial precursor cluster (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

primordium______________________________________
eye disc posterior to the morphogenetic furrow__|
                                                ommatidial precursor cluster
                                                 |__four cone-cell ommatidial precursor cluster  12 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	ommatidial precursor cluster
Develops from	two cone-cell ommatidial precursor cluster
Part of
Synonyms & Secondary IDs
Synonyms
	"four cone-cell stage ommatidial cluster" EXACT
Secondary IDs

External Crossreferences & Linkouts