anaphase
American Heritage Dictionary:
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an·a·phase
(ăn'ə-fāz') 
n.
The stage of mitosis and meiosis in which the chromosomes move to opposite ends of the nuclear spindle.
n.
The stage of mitosis and meiosis in which the chromosomes move to opposite ends of the nuclear spindle.
Oxford Dictionary of Biochemistry:
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anaphase
a stage in mitosis or meiosis during which the two sister chromatids of each chromosome separate and move towards opposite poles of the spindle.
| anandamide, anamnestic reaction, analytical ultracentrifuge | |
| anaphase promoting complex, anaphylactic shock, anaphylactoid reaction |
Saunders Veterinary Dictionary:
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anaphase
The third stage of division of the nucleus of a cell in either meiosis or mitosis.
Random House Word Menu:
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categories related to 'anaphase'
- Genetics, Heredity, and Evolution - anaphase: stage in meiosis or mitosis in which chromatids separate and move to opposite poles
Wikipedia on Answers.com:
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Anaphase
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This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (June 2009) |
Anaphase, from the ancient Greek ἀνά (up) and φάσις (stage), is the stage of mitosis or meiosis when chromosomes move to opposite poles of the cell.
Anaphase accounts for approximately 1% of the cell cycle's duration. It begins with the regulated triggering of the metaphase-to-anaphase transition. Metaphase ends with the destruction of cyclin, which is required for the function of metaphase cyclin-dependent kinases (M-Cdks). Anaphase is initiated with the cleavage of securin, a protein that inhibits the protease known as separase. Separase then cleaves cohesin, a protein responsible for holding sister chromatids together.
Basically, in anaphase, the chromosomes split and migrate to opposite poles of the cell. While the chromosomes are drawn to each side of the cell, the non-kineticore spindle fibers push against each other, in a ratcheting action, that stretches the cell into an oval.
Once Anaphase is complete, the cell moves into telophase.
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Oxford Dictionary of Biochemistry
Oxford University Press. Oxford Dictionary of Biochemistry and Molecular Biology © 1997, 2000, 2006 All rights reserved.
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Saunders Veterinary Dictionary
Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
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Random House Word Menu
© 2010 Write Brothers Inc. Word Menu is a registered trademark of the Estate of Stephen Glazier.
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Mentioned in
bivalent chromosome
(cell and molecular biology)
anaphase-promoting complex
(cell and molecular biology)
» More