Results 261 to 270 of about 57,771 (301)

Exiting prophase I: no clear boundary

Current Genetics, 2017
The meiotic cell cycle provides a unique model to study the relationship between recombinational DNA repair and the cell cycle, since homologous recombination, induced by programmed DNA double-strand breaks (DSBs), is integrated as an essential step during meiosis.
Hideo Tsubouchi, Bilge Argunhan, Tomomi Tsubouchi   +2 more
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Acrocentric prophasing in bromodeoxyuridine-incorporated chromosomes

Cancer Genetics and Cytogenetics, 1990
Chromosomes that appear to be incompletely condensed [pulverized, prematurely condensed chromosomes (PCCs), prophasing] are known to occur in metaphase spreads of cells from normal individuals and more frequently in cells from individuals with malignant disease or in cells exposed in vitro or in vivo to various agents such as viruses, chemicals, and ...
K, Kurvink, J, Cervenka
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GENETICS OF MEIOTIC PROPHASE I IN PLANTS

Annual Review of Plant Biology, 2006
During meiotic prophase I, traits are reassorted as a result of a highly organized process involving sister chromatid cohesion, homologous chromosome alignment, pairing, synapsis, and recombination. In the past two years, a number of components involved in this pathway, including Structure Maintenance of Chromosomes (SMC), MRE11, the RAD51 homologs ...
Hamant, Olivier, Ma, H.-L., Cande, Wz
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Silver-stained structures in mammalian meiotic prophase

Chromosoma, 1979
Silver staining of mammalian spermatocytes revealed, in light microscopy, synaptonemal complex and structures within the sex vesicle. It is feasible to follow the chromosome pairing phenomenon from zygotene to pachytene by examining the behavior of synaptonemal complexes.
S, Pathak, T C, Hsu
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The proteasome enters the meiotic prophase fray

BioEssays, 2017
The segregation of homologous chromosomes in meiosis depends on their ability to locate one another in the nucleus and establish a physical association through crossing over. A tightly regulated number of crossovers (COs) emerges following repair of induced DNA double‐strand breaks by homologous recombination (HR), but the process of how HR ...
Aleksandar, Vujin, Monique, Zetka
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The G-banded prophase chromosomes of man

Human Genetics, 1975
Using a simple G-banding technique developed in our laboratory, analysis of late prophases enables the visualization of approximately 1000 bands in the haploid set of human chromosomes. These bands have been classified according to the recommendations of the Paris Conference.
J J, Yunis, O, Sanchez
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Meiotic Prophase in Female Mice

Nature, 1957
IN a preliminary study of chiasmata in female mice the meiotic prophase was observed in sixty-two females from a variety of strains, mostly outbred. It was found that in all strains the oogonial nuclei in newly born females are without exception in the resting stage probably following the last mitotic division. At about 12 hr.
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Chromatin dynamics in the male meiotic prophase

Cytogenetic and Genome Research, 2003
During the male meiotic prophase in mouse and man, pairing and recombination of homologous chromosomes is accompanied by changes in chromatin structure. In this review, the dynamics of assembly and disassembly of the chromatin-associated complexes that mediate sister chromatid cohesion (cohesin) and maintain chromosome pairing (the synaptonemal complex)
Baarends, Willy, Grootegoed, Anton
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Submicroscopic structure of meiotic chromosomes during prophase

Experimental Cell Research, 1958
Abstract The existence of well differentiated structures in prophasic nuclei of rat primary spermatocytes has been demonstrated. These structures consist of ribbon-like groups of three threads; two external thick and dense (500 A wide); one medial thin and light (120 A wide).
J R, SOTELO, O, TRUJILLO-CENOZ
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Mapping G-bands on human prophase chromosomes

Cytogenetic and Genome Research, 1975
Ohnuki’s method for demonstrating coils in human metaphase chromosomes also reveals a fine G-band pattern on prophase chromosomes of sufficient clarity to justify an attempt at mapping. Maps are provided for each chromosome to show the maximum number of prophase bands observed, and an intermediate stage in chromosome contraction, tracing the pathways ...
T R, Bigger, J R, Savage
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