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Any developmental process that results in the creation of defined areas or spaces within an organism to which cells respond and eventually are instructed to differentiate. Partitioning the head anlage into a fixed number of segmental units. The number of segments composing the insect head has long been a subject of debate, but it is generally agreed that there are 6 or 7 segments. From anterior to posterior the head segments are the procephalic segments (labral, (ocular), antennal and intercalary) and the gnathal segments (mandibular, maxillary and labial). Partitioning the head anlage into procephalic (labral, (ocular), antennal and intercalary) segments. The procephalic segments lie anterior to the gnathal (posterior head) segments, and are pattered by different segmentation gene cascades to the abdominal, thoracic and posterior head (gnathal) segments. The specification of the characteristic structures of the intercalary segment of the anterior head, following establishment of segment boundaries. Identity is considered to be the aggregate of characteristics by which a structure is recognized. The hierarchical steps resulting in the progressive subdivision of the anterior/posterior axis of the embryo. The specification of the characteristic structures of the antennal segment following establishment of segment boundaries. Identity is considered to be the aggregate of characteristics by which a structure is recognized.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: anterior head segmentation
Acc: GO:0035288
Aspect: Biological Process
Desc: Partitioning the head anlage into procephalic (labral, (ocular), antennal and intercalary) segments. The procephalic segments lie anterior to the gnathal (posterior head) segments, and are pattered by different segmentation gene cascades to the abdominal, thoracic and posterior head (gnathal) segments.
Synonyms:
  • procephalic segmentation
Proteins in PDR annotated with:
   This term: 7 [Search]
   Term or descendants: 9 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0035288 - anterior head segmentation (interactive image map)

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