Blastomere
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Blastomere
A blastomere is the structure which results from the divisions of a fertilised egg during embryonic development .
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Blastomere
[Gr. blastos - germ, bud, shoot; meros - a part]. Cells produced by cleavage of the zygote.
blastomere - any embryonic cell formed during cleavage.
blastopore - site of gastrulation initiation and later the opening of the archenteron at the vegetal region of certain embryos (e.g., echinoderm and amphibian); ...
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.
blastomere exhibiting a size intermediate between a macromere and a micromere.
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blastomeres Any of the cells produced by cleavage of a zygote.
blastopore External opening of the archenteron in the gastrula.
Blastomere separation (sometimes called "twinning" after the naturally occurring process that creates identical twins_ involves splitting a developing embryo soon after fertilization of the egg by a sperm (sexual reproduction) to give rise to two or ...
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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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 ...
 See also: Embryo, Cells, Cell, Cleavage, Organ
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