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The process that results in the patterns of cell differentiation that will arise in an embryo. 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). 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. The regionalization process that divides an organism or part of an organism into a series of semi-repetitive parts, or segments, often arranged along a longitudinal axis. Partitioning of the blastoderm embryo into trunk segmental units. In Drosophila, the trunk segments include thoracic segments and abdominal segments A1 to A8. The regionalization process that divides the spatial regions of an embryo into serially repeated regions. The hierarchical steps resulting in the progressive subdivision of the anterior/posterior axis of the embryo. Subdivision of the embryo along the anterior/posterior axis into anterior, posterior and terminal regions. The pattern specification process by which an axis or axes is subdivided in space to define an area or volume in which specific patterns of cell differentiation will take place or in which cells interpret a specific environment. The process whose specific outcome is the progression of an embryo from its formation until the end of its embryonic life stage. The end of the embryonic stage is organism-specific. For example, for mammals, the process would begin with zygote formation and end with birth. For insects, the process would begin at zygote formation and end with larval hatching. For plant zygotic embryos, this would be from zygote formation to the end of seed dormancy. For plant vegetative embryos, this would be from the initial determination of the cell or group of cells to form an embryo until the point when the embryo becomes independent of the parent plant.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: blastoderm segmentation
Acc: GO:0007350
Aspect: Biological Process
Desc: The hierarchical steps resulting in the progressive subdivision of the anterior/posterior axis of the embryo.
Proteins in PDR annotated with:
   This term: 31 [Search]
   Term or descendants: 334 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0007350 - blastoderm segmentation (interactive image map)
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