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The regionalization process by which the posterior (abdominal) regions of the embryo are specified by the gap genes. The specification of the anterior/posterior axis of the embryo by products of genes expressed in the zygote; exemplified in insects by the gap genes, pair rule genes and segment polarity gene cascade. The activation of genes encoding transcription factors in the posterior region of an insect embryo by a combination of maternal regulatory signals and interactions among themselves; exemplified by the activation of expression of the Drosophila knirps gene. 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. Specification of the borders of posterior gap gene expression mediated largely by the effects of other gap genes; in insects this is exemplified by hunchback and tailless repression of knirps. The regionalization process by which specific areas of cell differentiation are determined along the anterior-posterior axis. The anterior-posterior axis is defined by a line that runs from the head or mouth of an organism to the tail or opposite end of the organism. The specification of the anterior/posterior axis of the embryo by the products of genes expressed maternally and genes expressed in the zygote.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: posterior abdomen determination
Acc: GO:0007359
Aspect: Biological Process
Desc: The regionalization process by which the posterior (abdominal) regions of the embryo are specified by the gap genes.
Proteins in PDR annotated with:
   This term: 1 [Search]
   Term or descendants: 1 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0007359 - posterior abdomen determination (interactive image map)
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