Gastrulation

gastrulation
the formation of the gastrula stage in embryonic development by an invagination by which the future digestive tract is formed
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Full article >>>

Gastrulation
[L. gastrula - the belly, stomach] The process in embryonic development whereby the three primary germ layers are laid down and the gut formed through complex cell migrations.
Full article >>>

Gastrulation forms three major "germ layers": ectoderm, mesoderm, and endoderm. By gastrulation, the genes of the zygote genome are being expressed.
View these stages as they occur in amphibians such as Xenopus laevis, the South African clawed frog.
Full article >>>

Gastrulation is the point in development when the implanted blastocyst develops three germ layers, the endoderm, the exoderm and the mesoderm.
Full article >>>

gastrulation The embryological process that results in the formation of the gastrula; results in the formation of the embryonic gut, ectoderm, and endoderm.138 ...
Full article >>>

Gastrulation involves a series of cell migrations to positions where they will form the three primary cell layers.
Ectoderm forms the outer layer.
Endoderm forms the inner layer.
Mesoderm forms the middle layer.
Full article >>>

gastrulation - stage in animal development following cleavage characterized by extensive cell movement and rearrangement to form a "three-layered" embryo of ectoderm, mesoderm and endoderm.
Full article >>>

gastrulation
The formation of a gastrula from a blastula.
Covered in Lab 14 Gametogenesis and Development ...
Full article >>>

In embryos homozygous for loss-of-function alleles of hh, expression of en is lost from ectodermal cells after gastrulation (DiNardo, 1988), indicating that the activity of hh, like that of wg, is also required for the maintenance of en transcription.
Full article >>>

The gastrula phase of embryonic development is seen in all animals except the sponges. It follows the blastula phase. The gastrula phase is marked by a dramatic restructuring called gastrulation.
Full article >>>

The endoderm-lined cavity, formed during the gastrulation process, that develops into the digestive tract of an animal.
Archezoa ...
Full article >>>


'"/>