early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst with a differentiated...

stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in mammals the blastocyst...

The morula develops into a structure called a blastula through a process called blastulation. The blastula develops into a structure called a gastrula through...

occurs during the blastula stage of embryonic development in non-mammals. During this stage, the embryo is referred to as a blastula. The series of changes...

yolk-filled cavity that forms in the blastula during very early embryonic development. At this stage in mammals the blastula is called the blastocyst, which...

embryo, it continues dividing into a hollow sphere of cells, which is a blastula. These outer cells form a single epithelial layer, the blastoderm, that...

folding of an area of the exterior sheet of cells towards the inside of the blastula. In each organism, the complexity will be different depending on the number...

move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Animals form a clade, meaning that they...

Diploblasty is a condition of the blastula in which there are two primary germ layers: the ectoderm and endoderm. Diploblastic organisms are organisms...

holoblastic or meroblastic depending on the species. During gastrulation, the blastula develops in one of two ways that divide the whole animal kingdom into two-halves...

to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating...

protostomes, a zygote first develops into a hollow ball of cells, called a blastula. In deuterostomes, the early divisions occur parallel or perpendicular...

and develops into a free-swimming blastula embryo in as few as 12 hours. Initially a simple ball of cells, the blastula soon transforms into a cone-shaped...

embryo has divided into many cells, forming a hollow ball called the blastula. The blastula is polar, and its two halves are called the animal hemisphere and...

blastocoel The fluid-filled or yolk-filled cavity that forms in the developing blastula or blastocyst in virtually all animal species. The blastocoel appears to...

Animal Name of larvae Porifera (sponges) coeloblastula (= blastula, amphiblastula), parenchymula (= parenchymella, stereogastrula) Heterocyemida Wagener's...

of the zygote after fertilization; blastomeres are an essential part of blastula formation, and blastocyst formation in mammals. In humans, blastomere formation...

move, reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have...

mitotic cell divisions transform the zygote into a hollow ball of cells, a blastula. This early embryonic form undergoes gastrulation, forming a gastrula with...

process of forming the blastocoel, the fluid-filled cavity defining the blastula stage in non-mammals, or the blastocyst in mammals. The dorsal (posterior)...

at the blastula stage, and are incorporated into the gonads during organogenesis. The germ layers form during the gastrulation of the blastula. The term...

gametes are produced in multicellular sex organs, and the zygotes include a blastula stage in their embryonic development. Metazoans do not include the sponges...

organizer. Even with the BCNE center (Blastula chordin and noggin expression center) removed from the blastula, the Nieuwkoop Center is able to induce...

structure consisting of an undifferentiated ball of cells and is called a blastula. In humans, blastocyst formation begins about five days after fertilization...

compact mass called the morula. Cleavage ends with the formation of the blastula, or of the blastocyst in mammals. Depending mostly on the concentration...

large endodermal cells which remains exposed on the vegetal surface of the blastula that will eventually be internalized by epiboly. Frank J. Dye (21 February...

blastodisc) is a single layer of embryonic epithelial tissue that makes up the blastula. It encloses the fluid filled blastocoel. Gastrulation follows blastoderm...

larger macromeres. Further divisions occur until P. flava finishes the blastula stage and goes on to gastrulation. The animal mesomeres of P. flava go...

order two Polarity in embryogenesis, the animal and vegetal poles within a blastula Cell polarity, differences in the shape, structure, and function of cells...

cells, both of which are derived from stem cells harvested from early (blastula stage) frog embryos. The skin cells provide rigid support and the heart...