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A biological process whose specific outcome is the progression of an integrated living unit: an anatomical structure (which may be a subcellular structure, cell, tissue, or organ), or organism over time from an initial condition to a later condition. A complex and coordinated series of cellular movements that occurs at the end of cleavage during embryonic development of most animals. The details of gastrulation vary from species to species, but usually result in the formation of the three primary germ layers, ectoderm, mesoderm and endoderm. The establishment, maintenance and elaboration of a pattern along a line or around a point. The developmental process pertaining to the initial formation of an anatomical structure from unspecified parts. This process begins with the specific processes that contribute to the appearance of the discrete structure and ends when the structural rudiment is recognizable. An anatomical structure is any biological entity that occupies space and is distinguished from its surroundings. Anatomical structures can be macroscopic such as a carpel, or microscopic such as an acrosome. The series of molecular signals generated as a consequence of a transforming growth factor beta receptor binding to one of its physiological ligands contributing to the formation of the primitive streak. The establishment, maintenance and elaboration of 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 series of molecular signals initiated by binding of Wnt protein to a frizzled family receptor on the surface of the target cell and ending with a change in transcription of target genes that contribute to the formation of the primitive streak. The developmental process pertaining to the initial formation of the primitive streak from unspecified parts. The primitive streak is a ridge of cells running along the midline of the embryo where the mesoderm ingresses. It defines the anterior-posterior axis. 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 process by which anatomical structures are generated and organized. Morphogenesis pertains to the creation of form. A gastrulation process in which the initial invagination becomes the anus and the mouth forms second.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: primitive streak formation
Acc: GO:0090009
Aspect: Biological Process
Desc: The developmental process pertaining to the initial formation of the primitive streak from unspecified parts. The primitive streak is a ridge of cells running along the midline of the embryo where the mesoderm ingresses. It defines the anterior-posterior axis.
Proteins in PDR annotated with:
   This term: 6 [Search]
   Term or descendants: 6 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0090009 - primitive streak formation (interactive image map)

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