Related topics: cells
Cell division
hideCell division is a process by which a cell, called the parent cell, divides into two or more cells, called daughter cells. Cell division is usually a small segment of a larger cell cycle. This type of cell division in eukaryotes is known as mitosis, and leaves the daughter cell capable of dividing again. The corresponding sort of cell division in prokaryotes is known as binary fission. In another type of cell division present only in eukaryotes, called meiosis, a cell is permanently transformed into a gamete and cannot divide again until fertilization. For simple unicellular organisms such as the amoeba, one cell division is equivalent to reproduction-- an entire new organism is created. On a larger scale, mitotic cell division can create progeny from multicellular organisms, such as plants that grow from cuttings. Cell division also enables sexually reproducing organisms to develop from the one-celled zygote, which itself was produced by cell division from gametes. And after growth, cell division allows for continual construction and repair of the organism. A human being's body experiences about 10,000 trillion cell divisions in a lifetime.
The primary concern of cell division is the maintenance of the original cell's genome. Before division can occur, the genomic information which is stored in chromosomes must be replicated, and the duplicated genome separated cleanly between cells. A great deal of cellular infrastructure is involved in keeping genomic information consistent between "generations".
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News tagged with cell division
New international study targets rare cancer bringing hope for advanced thymic cancer patients
Dec 08, 2009 |
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Dec. 8, 2009 — The Translational Genomics Research Institute (TGen) and Scottsdale Healthcare are testing a new drug specifically for thymic cancer based on early promising results at Scottsdale Healthcare.
Long-term physical activity has an anti-aging effect at the cellular level
Nov 30, 2009 |
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Intensive exercise prevented shortening of telomeres, a protective effect against aging of the cardiovascular system, according to research reported in Circulation: Journal of the American Heart Association.
The Nobel Prize and Pond Scum as a 'Model' Organism
Oct 15, 2009 |
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A man is a man and a mouse is a mouse, but if you talk to a few biomedical scientists about their research, at least one is likely to spring the term “mouse model” on you.
Researchers aim to simplify a compound that acts on alpha-tubulin to slow down the process of cell division associated w
Sep 09, 2009 |
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Research is being carried out to design and synthesise a new generation of compounds that act on the tubulin molecule, involved in cell multiplication, through a mechanism that has not yet been used in chemotherapy. ...
The ends of mRNAs may prevent the beginnings of cancer
Aug 20, 2009 |
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The tail ends of cellular protein templates, regions often thought relatively inconsequential, may actually play a role in preventing normal cells from becoming cancerous.
Newly discovered mechanism in cell division has implications for chromosome's role in cancer
Aug 17, 2009 |
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"A biologist, a physicist, and a nanotechnologist walk into a..." sounds like the start of a joke. Instead, it was the start of a collaboration that has helped to decipher a critical, but so far largely unstudied, ...
Some mice stem cells divide in unexpected ways
Aug 14, 2009 |
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(PhysOrg.com) -- Using new genetic tools, Cornell researchers have found that some stem cells in mice behave dramatically different than in fruit flies, where most of the pioneering stem cell work has been ...
Math model accurately mimics cell division in carbon-cycling bacterium
Aug 14, 2009 |
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Scientists from the Department of Biological Sciences and the Virginia Bioinformatics Institute (VBI) at Virginia Tech have developed a quantitative, mathematical model of DNA replication and cell division for the bacterium ...
Cell division find prompts overhaul of immune response modeling
Jul 21, 2009 |
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Research at the Walter and Eliza Hall Institute into the mechanics of how two types of white blood cells grow and die is fundamentally changing the development of computer models that are used to predict how ...
New research shows key player in mitosis not required for chromosome alignment
Jul 06, 2009 |
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(PhysOrg.com) -- K-fibers, structures long thought to play a key role in the alignment of chromosomes prior to cell division, are not required after all, say Indiana University and New York State Department ...
Computer scientists develop model for studying arrangements of tissue networks by cell division
Jun 17, 2009 |
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Computer scientists at Harvard have developed a framework for studying the arrangement of tissue networks created by cell division across a diverse set of organisms, including fruit flies, tadpoles, and plants.
Protein that triggers plant cell division
Jun 11, 2009 |
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From the valves in a human heart to the quills on a porcupine to the petals on a summer lily, the living world is as varied as it is vast. For this to be possible, the cells that make up these living things must be just as ...
Is this the beginning of the end of plant breeding?
Jun 09, 2009 |
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No human is a clone of their parents but the same cannot be said for other living things. While your DNA is a combination of half your mother and half your father, other species do things differently. The advantage of clonal ...
Study may aid efforts to prevent uncontrolled cell division in cancer
May 28, 2009 |
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Researchers from the Ludwig Institute for Cancer Research at the University of California, San Diego School of Medicine have uncovered a remarkable property of the contractile ring, a structure required for cell division. ...
Motor proteins may be vehicles for drug delivery
Mar 20, 2009 |
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Specialized motor proteins that transport cargo within cells could be turned into nanoscale machines for drug delivery, according to bioengineers. Chemical alteration of the proteins' function could also help inhibit the ...
