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...

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...

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...

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

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

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

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

(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...

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...

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...

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

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...

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

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...

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

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

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

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

little or no embryonic development within the mother. This is the reproductive method used by most animal species, as opposed to viviparous animals that develop...

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

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

Animal welfare in the United Kingdom relates to the treatment of animals in fields such as agriculture, hunting, medical testing and the domestic ownership...

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...

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

Tam, P.L.; Rossant, J. (2003). "Mouse embryonic chimeras: tools for studying mammalian development". Development. 130 (25): 6155–6163. doi:10.1242/dev...

viviparous animal that develops from an embryo. Following the embryonic stage, the fetal stage of development takes place. Prenatal development is a continuum...