One of the post-cleavage stages, it is preceded by a stage comprised of the vegetal pole, which retains most of the yolk and does not participate in tissue formation, and the animal pole, which will later form the embryonic body.
One of the post-cleavage stages, it is preceded by a stage comprised of the vegetal pole, which retains most of the yolk and does not participate in tissue formation, and the animal pole, which will later form the embryonic body. It is followed by the development of the archenteron and the formation of primitive germ layers. This stage sees the formation of, within the ball of cells, a hollow, fluid-filled cavity known as the blastocoel. FTP, identify this stage of embryonic development that follows the morula and precedes the gastrula.
One of the post-cleavage stages, it is preceded by a stage comprised of the vegetal pole, which retains most of the yolk and does not participate in tissue formation, and the animal pole, which will later form the embryonic body.
{blastula}