cell division


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division

 [dĭ-vizh´un]
the act of separating into parts.
cell division fission of a cell, the process by which cells reproduce.

cell division

n.
The process by which a cell divides to form two daughter cells. Upon completion of the process, each daughter cell contains the same genetic material as the original cell and roughly half of its cytoplasm.

cell division

the division of a cell into two new cells during growth or reproduction. The new cells are called daughter cells. In PROKARYOTES, two identical cells are produced by BINARY FISSION. In EUKARYOTES, cell division is more complicated because the genetic material is located on CHROMOSOMES inside the nucleus, being composed of two distinct processes that usually occur together; (a) nuclear division (MITOSIS producing two identical nuclei, or MEIOSIS producing four nuclei with a halving of the genetic complement) and (b) cytoplasmic division (CYTOKINESIS).
References in periodicals archive ?
The number of mother cells produced, or the number of cell divisions which occurred, depends on the number of evolutionary lineages (domains of life) to be created.
On the basis of these observations, it appears that high temperatures disrupted cell division in peripheral endosperm.
The cells were killed by the dye, of course, so that all cell divisions were stopped.
These complexes are needed to properly unwind chromosomal DNA during cell division so that two new sets of chromosomes - one for each daughter cell - can be formed from the original set.
They found that significantly increasing levels of Chk1-S induces cell division regardless of whether DNA replication or repair is complete.
To produce fertile offspring, ,chromosomes from both parents must pair off evenly during meiosis, a process of cell division that produces sex cells.
The onset of senescence reactivates these genes, shutting down cell division. Proteins encoded by some of the growth-inhibitory genes are known to act at a distance, stopping the growth of other tumor cells in the vicinity.
Rex Hodge, currently the CEO/president of Anuvu Incorporated and an acknowledged expert in the fuel cell industry, will join the management team of the acquired fuel cell division. Originally from the aerospace industry, Rex has nearly fifteen years of engineering experience in the fuel-cell sector and was recently commended by the California Energy Commission on his efforts to develop fuel cell technology.
Retinal cell specification, the commitment to differentiate as one particular cell type, occurs at or following the final cell division. The underlying mechanisms of cellular specification that generate the diversity of retinal cell types are unknown.
They reported that both herbicides suppressed root elongation, had root radial enlargement, and produced abnormal mitotic figures resulting in disrupted cell division. In a review of mitotic disrupter herbicides, Vaughn and Lehnen (1991) described carbamate herbicides as disrupting mitosis by producing multipolar mitotic figures which direct the chromosomes toward three or more foci, rather than the two poles at normal anaphase, yielding irregularly shaped and abnormal cell walls.
The discovery of the mechanism of cell division by Flemming (see 1882) stimulated many biologists into investigating the matter further.
LMU researchers have identified a novel protein that plays a crucial role in the formation of the mitotic spindle, which is essential for correct segregation of a full set of chromosomes to each daughter cell during cell division.

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