prophase


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pro·phase

 (prō′fāz′)
n.
1. The first stage of mitosis, during which the chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell.
2. The first stage of meiosis, constituted by a series of events that include the thickening and coiling of the chromosomes, synapsis of homologous chromosomes, tetrad formation, and crossing over.

pro·pha′sic (-fā′zĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

prophase

(ˈprəʊˌfeɪz)
n
1. (Biology) the first stage of mitosis, during which the nuclear membrane disappears and the nuclear material resolves itself into chromosomes. See also metaphase, anaphase, telophase
2. (Biology) the first stage of meiosis, divided into leptotene, zygotene, pachytene, diplotene, and diakinesis phases
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pro•phase

(ˈproʊˌfeɪz)

n.
the first stage of mitosis or meiosis in cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes.
[1880–85]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

pro·phase

(prō′fāz′)
The first stage of cell division. Before prophase begins, the chromosomes duplicate to form two long, thin strands called chromatids. During prophase itself, the chromatids condense and thicken and the membrane surrounding the nucleus disappears. In mitosis, prophase is followed by metaphase. See more at meiosis, mitosis.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.prophase - the first stage of meiosisprophase - the first stage of meiosis    
diakinesis - the final stage of the prophase of meiosis
diplotene - the fourth stage of the prophase of meiosis
leptotene - the first stage of the prophase of meiosis
meiosis, miosis, reduction division - (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
pachytene - the third stage of the prophase of meiosis
phase of cell division - a stage in meiosis or mitosis
synezesis, synizesis - the contraction of chromatin towards one side of the nucleus during the prophase of meiosis
zygotene - the second stage of the prophase of meiosis
2.prophase - the first stage of mitosis
mitosis - cell division in which the nucleus divides into nuclei containing the same number of chromosomes
phase of cell division - a stage in meiosis or mitosis
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
profaza

pro·phase

n. profase, primera fase en la mitosis celular.
English-Spanish Medical Dictionary © Farlex 2012
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* ProPhase Labs (NASDAQ: PRPH) shares moved 0.0% (flat) on Tuesday's session after setting a new 52-week low of $1.88 to begin trading.
(U.S.), Bracket Global (U.S.), ProPhase, LLC (U.S.), Neurocog Trials, Inc.
Regarding its talks with Qatar Investment Authority, Li said "we are in prophase stage" and QIA has been "positive" in its attitude towards future cooperation.
Meiosis in oocyte nuclei ceases at the diplotene stage of prophase I, during which they connect to one another by cytoplasmic bridges.
The number of cells in the mitotic phases (including the late prophase, metaphase, anaphase and telophase; n) per total cells (3,000-3,500; C) was determined under light microscope.
Most bone graft granules used in lumbar posterior pedicle screw fixation with Cage supporting bone graft fusion are cancellous bones which collapse easily when bearing strong strength.11 During bone graft prophase inflammatory reaction as well as anaphase callus reconstruction and remodeling, osteoblasts can absorb necrotic bone and bone tissue outside the stress axis while forming and connecting callus.12 After implantation of large bone granules, considerable gaps are produced during bone granule accumulation and mutual extrusion, causing bone trabecula breakage.
A high level of cAMP maintains oocyte arrest at the first meiotic prophase, under the condition of in vitro culture, transient increase of cAMP with Forskolin could induce meiotic resumption and increase maturation rate of DOs, but the DOs could not be performed in in vitro fertilization (IVF) [14].
At the stages of meiotic prophase I (i.e., leptotene, zygotene and pacyhtene), the sex chromosomes were positively heteropycnotic and large X1 and X2 associated with each other.
Examples of Allium cepa roots cells in normal cell division: (A) interfase; (B) prophase; (C) metaphase; (D) anaphase and (E) telophase at 400x magnification.
During mitosis, condensin I is required for removal of cohesin from chromosome arms and for chromosome shortening, whereas condensin II plays a role in chromosome condensation during early prophase [17].
The observed cells were scored for the different cell division stages (interphase, prophase, metaphase, anaphase, and telophase).