FB2026_03 , released September 17, 2026

CV Term Report

Help Close All Open All

General Information

Term

mature eight-cell ommatidial precursor cluster

ID (Ontology)

FBbt:00001773 (Fly Anatomy)

Definition

Ommatidial precursor cluster composed of eight future photoreceptors. The nuclei of R8, R2 and R5 are displaced basally compared to the immature eight cell precursor clusters, whereas R7's nucleus is still ascending. The bilateral symmetry of the ommatidium is prominent at this stage. The apical processes of the cells that will become the anterior and posterior cone cells occupy their definitive niches, contacting R2 and R5, respectively (Cohen, 1993).[ FlyBase:FBrf0064789 ]

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
Insertions (FBti)	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	Insertions	Constructs
mature eight-cell ommatidial precursor cluster (all annotations which use CV term, excluding "NOT" statements)
mature eight-cell ommatidial precursor cluster \| somatic clone			--

Spanning Tree (Parents/Children)

primordium______________________________________
eye disc posterior to the morphogenetic furrow__|
                                                ommatidial precursor cluster
                                                 |__mature eight-cell ommatidial precursor cluster  6 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	ommatidial precursor cluster
Develops from	immature eight-cell ommatidial precursor cluster
Part of
Synonyms & Secondary IDs
Synonyms
	"symmetrical eight-cell ommatidial precursor cluster" RELATED
Secondary IDs

External Crossreferences & Linkouts