diplotene


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diplotene

(ˈdɪpləʊˌtiːn)
n
(Biology) the fourth stage of the prophase of meiosis, during which the paired homologous chromosomes separate except at the places where genetic exchange has occurred. See also chiasma1, crossing over
[C20: from diplo- + Greek tainia band]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diplotene - the fourth stage of the prophase of meiosis
crossing over, crossover - the interchange of sections between pairing homologous chromosomes during the prophase of meiosis
prophase - the first stage of meiosis
phase, stage - any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
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References in periodicals archive ?
Different phases of oocyte maturation: Oocyte maturation is a complex long-cell procedure containing meiotic cycle development (from diplotene to Metaphase-II) and reprogramming of cytoplasmic events, enabling oocytes to achieve their fertilization and embryogenesis (Eichenlaub et al.,2013).
Meiosis in oocyte nuclei ceases at the diplotene stage of prophase I, during which they connect to one another by cytoplasmic bridges.
Role of Greatwall kinase in release of mouse oocytes from diplotene arrest.
During diplotene, diakinesis and metaphase I, 16 autosomal bivalents and three univalent sex chromosomes were seen; generally, one chiasma (i.e., interstitial or terminal type) per bivalent was observed (Fig.
All five species analyzed here present a SCS of the X0/XX type, which was confirmed due to the difference of one chromosome between male and female mitotic metaphase cells (except in Mesabolivar togatus, in which females were not analyzed), presence of only one chromosomal univalent in male diplotene, and occurrence of the X chromosome in only one pole in metaphase II cells.
The presence of primary spermatocytes at two different stages, specifically zygotene and diplotene, with large nuclei observed in spermatocytes in the diplotene stage, was the other notable characteristic of this stage.
Reduced AR has an influence on the functions of Sertoli cells in supporting and nurturing germ cells, causing the arrest of spermatogenesis at the diplotene spermatocyte stage of meiosis [13, 31].
During the diplotene stage of prophase, when the chromosomes separate, the mitochondria and most other organelles localise to one side of the nucleus forming Balbiani's vitelline body [191, 192].
Chaube, "Reactive oxygen and nitrogen species during meiotic resumption from diplotene arrest in mammalian oocytes," Journal of Cellular Biochemistry, vol.
Primary spermatocytes, stained with the anti-SCP3 antibody, were selected to evaluate the respective percentages of leptotene, zygotene, pachytene and diplotene stages.
The preleptotene spermatocytes enter prophase I of meiosis, transform into leptotene, zygotene, pachytene and diplotene cells, which then quickly finish meiosis I forming secondary spermatocytes.