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Internalization of the anterior midgut into the interior of the embryo. Formation of a partial necklace of inturning tissue on the lateral sides of the embryo, along the dorsal-ventral axis. This furrow demarcates head from thorax in the developing protostome. Elongation of the germ band on the ventral side of the embryo, accompanied by a halving in width. The elongation process pushes the posterior midgut invagination closed and compresses the amnioserosa further. Formation of the amnioserosa, an epithelium that occupies a hole in the embryonic dorsal epidermis. This occurs by the transformation of a narrow strip of cells at the dorsal midline of the blastoderm from columnar to squamous cells, accompanied by a lateral shift. 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. A complex and coordinated series of cellular movements, including germ band extension, that occurs at the end of cleavage during embryonic development. An example of this process is found in Drosophila melanogaster. Formation of a ventral indentation (furrow) from the blastoderm epithelium, which is internalized to form a tube in the interior of the embryo, marking the start of gastrulation. Formation of a cup-shaped invagination at the posterior end of the embryo, bringing the posterior midgut and hindgut primordia into the interior. A gastrulation process in which the initial invagination becomes the mouth and the anus forms second.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: gastrulation involving germ band extension
Acc: GO:0010004
Aspect: Biological Process
Desc: A complex and coordinated series of cellular movements, including germ band extension, that occurs at the end of cleavage during embryonic development. An example of this process is found in Drosophila melanogaster.
Proteins in PDR annotated with:
   This term: 23 [Search]
   Term or descendants: 58 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0010004 - gastrulation involving germ band extension (interactive image map)
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