biology, animal embryonic development, also known as animal embryogenesis, is the developmental stage of an animal embryo. Embryonic development starts...

Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst...

Human embryonic development or human embryogenesis is the development and formation of the human embryo. It is characterised by the processes of cell...

the nervous system of animals, from the earliest stages of embryonic development to adulthood. The field of neural development draws on both neuroscience...

is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life...

cap, and cotyledons. Unlike the embryonic development in animals, and specifically in humans, plant embryonic development results in an immature form of...

gestation. Prenatal development starts with fertilization, in the germinal stage of embryonic development, and continues in fetal development until birth. The...

a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million...

separate the left and right sides of the heart. The heart derives from embryonic mesodermal germ layer cells that differentiate after gastrulation into...

forms during embryonic development. The three germ layers in vertebrates are particularly pronounced; however, all eumetazoans (animals that are sister...

(2023). "The yolk sac as the main organ in the early stages of animal embryonic development". Frontiers in Physiology. 14: 1185286. doi:10.3389/fphys.2023...

embryonic stages of different vertebrate species, he formulated the recapitulation theory. This theory states that an animal's embryonic development follows...

Embryonic diapause (delayed implantation in mammals) is a reproductive strategy used by a number of animal species across different biological classes...

just like all animals do. The germinal stage, the embryonic stage, and the fetal stage are the three phases that make up this development. The first stage...

consist of excess elements which the animal has to expend energy to get rid of. This facilitates faster development; however, a trade-off may occur as there...

Histone methylation is crucial for almost all phases of animal embryonic development. Animal models have shown methylation and other epigenetic regulation...

of experimentation into blended human and animal creatures has paralleled the discussions around embryonic stem-cell research (the 'stem cell controversy')...

A trilaminar embryonic disc, trilaminary blastoderm, or trilaminar germ disk is an early stage in the development of triploblastic organisms, which include...

in certain required embryonic development processes. The SHH gene and proteins play major roles in not only the tooth development of organisms, but they...

homunculus – that simply becomes larger during development. The competing explanation of embryonic development was epigenesis, originally proposed 2,000 years...

in the adult organism. The main processes involved in the embryonic development of animals are: tissue patterning (via regional specification and patterned...

blastula, during embryonic development. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million living animal species have...

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

animals, are multicellular organisms that sum more than 1.5 million living species. They are characterized by a blastula phase during their embryonic...

for embryonic development, male fertility, regulation of bone growth and immune function. All-trans-retinoic acid is required for chordate animal development...

post-implantation stage of development. Researchers are currently focusing heavily on the therapeutic potential of embryonic stem cells, with clinical...

cavities are formed from pockets related to the embryonic gut. Enterocoely is the stage of embryological development of deuterostomes in which the coelom forms...

a new animal phylum. Among the new discoveries was study of the early phases of the animals' embryonic development and evidence that the animals that people...

molecule of embryonic development in humans and animals, encoded by the SHH gene. This signaling molecule is key in regulating embryonic morphogenesis...

cells, lacking many cellular components that would be necessary for embryonic development. They are specialized for motility, seeking out an egg cell and...