Definitions Found:
A cell formed by cleavage of a fertilized ovum
- blastomereA cell formed by cleavage of a fertilized ovum
- blastomeresA cell formed by cleavage of a fertilized ovum
- blastularrelating to the blastula, a hollow sphere of cells, one cell thick, formed in the cleavage of a fertilized ovum
- spermatozoonThe mature motile male sex cell of an animal, by which the ovum is fertilized, typically having a compact head and one or more long flagella for swimming
- spermatozoaThe mature motile male sex cell of an animal, by which the ovum is fertilized, typically having a compact head and one or more long flagella for swimming
- morulationthe process of cleavage, or segmentation, of the ovum, by which a morula is formed
- morulationsMORULATION, the process of cleavage, or segmentation, of the ovum, by which a morula is formed
- micromerea small cell formed by unequal division of an ovum or embryo, eg in sea urchins
- micromeresMICROMERE, a small cell formed by unequal division of an ovum or embryo, eg in sea urchins
- zygotethe cell produced by the union of two gametes, before it undergoes cleavage
- zygotesthe cell produced by the union of two gametes, before it undergoes cleavage
- amitosisthe direct method of cell division, characterized by simple cleavage of the nucleus without the formation of chromosomes
- amitosescell division by simple cleavage of the nucleus and division of the cytoplasm without spindle formation or appearance of chromosomes
- macromerea large blastomere, one of the segments first formed by the division of the ovum
- macromeresMACROMERE, a large blastomere, one of the segments first formed by the division of the ovum
- blastomereone of the segments first formed by the division of the ovum
- blastomeresBLASTOMERE, one of the segments first formed by the division of the ovum
- spermatocytesA cell produced at the second stage in the formation of spermatozoa, formed from a spermatogonium and dividing by meiosis into spermatids
- spermatocyteA cell produced at the second stage in the formation of spermatozoa, formed from a spermatogonium and dividing by meiosis into spermatids
- bacteroidsA bacteroid organism or structure, esp. a modified cell formed by a symbiotic bacterium in a root nodule of a leguminous plant
- spermatogoniaA cell produced at an early stage in the formation of spermatozoa, formed in the wall of a seminiferous tubule and giving rise by mitosis to spermatocytes
- spermatogoniumA cell produced at an early stage in the formation of spermatozoa, formed in the wall of a seminiferous tubule and giving rise by mitosis to spermatocytes
- spindlesA slender mass of microtubules formed when a cell divides. At metaphase, the chromosomes become attached to it by their centromeres before being pulled toward its ends