blastomeres
Any cell that occurs in the blastula.
blastopore
The opening of the gastrula that develops into the mouth in protostomes and the anus in deuterostomes.
blastomeres Any of the cells produced by cleavage of a zygote.
blastopore External opening of the archenteron in the gastrula.
The inner blastomeres will become the inner cell mass and the blastomeres on the surface will later flatten to form the trophoblast.
Blastomeres have this property.
Pluripotent stem cells cannot grow into a whole organism, but they are able to differentiate into cells derived from any of the three germ layers.
mass of cells, called blastomeres, formed by cleavage of the egg in the early development of many animals
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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[Gr. epi - on, upon; Gr. bole - a throw]. The movement of the animal pole blastomeres over and encompassing the vegetal hemisphere blastomeres that occurs in the embryo at the beginning of gastrulation in some amphibians and teleosts.
A pattern of development, such as that of a mollusk, in which the early blastomeres each give rise to a specific part of the embryo. In some animals, the fate of the blastomeres is established in the zygote.
mosaic evolution ...
micromeres - small blastomeres; in the sea urchin embryo, the four small cells that result from the fourth cleavage of the vegetal tier of cells (half the cells resulting from that tier's cleavage).
event in early cleavage-stage mammalian embryo during which blastomeres become tightly joined, forming gap junctions enabling the exchange of ions and small molecules to pass from one cell to the next.
 See also: Blastomere, Embryo, Cleavage, Cells, Zygote
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