Results 231 to 240 of about 6,353,452 (269)
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Synaptonemal complexes in a tetraploid mouse spermatocyte
Experimental Cell Research, 1977Summary Quadrivalents, represented by unique synaptonemal complex configurations, together with normal bivalents are observed for the first time in a mammalian tetraploid pachytene spermatocyte prepared by microspreading. The chromosomal axes (lateral elements) clearly demonstrate the switching of partners in the quadrivalents as predicted from ...
Alberto J. Solari, M.J. Moses
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Synaptonemal complexes in insects
International Journal of Insect Morphology and Embryology, 1996Abstract The synaptonemal complex (SC) is the key nuclear element formed in meiotic prophase I to join 2 homologous chromosomes at the pachytene bivalent. It is a highly conserved structure that is universally present in eukaryotes. The SC is presented as a tripartite protein structure, which consists of 2 lateral elements and a central region.
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Spreading the synaptonemal complex of Neurospora crassa [PDF]
Chromosoma, 1993 A protocol was developed to spread the synaptonemal complex (SC) of the fungus Neurospora crassa. It involves direct mechanical breakage of meiotic cells before spreading. This technique makes it possible to examine the SC of the same nucleus with both light and electron microscopy. This protocol is potentially applicable for other Pyrenomycetes.
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Synaptonemal Complex and Microtubule Line Profiler
2019Line profiler’s purpose is to evaluate datasets in a biological/biophysical context. The software recognizes line shaped structures in image data and computes their mean position and orientation with sub-pixel accuracy. For each line a mean intensity profile is calculated.
Fabian U. Zwettler +2 more
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The synaptonemal complex and the achiasmatic condition
Journal of Cell Science, 1973ABSTRACT The onion species AUium amplectans includes both a triploid and a tetraploid variety. By light microscopy both varieties appear to have normal synapsis during pachytene of meiosis. However, the triploid does not form chiasmata and exhibits almost total asynapsis following pachytene.
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The synaptonemal complex in higher plants
Critical Reviews in Plant Sciences, 1984The basic structure of the synaptonemal complex and its components will be outlined, and placed in the‐context of current understanding of meiotic prophase events. The range of plants in which synaptonemal complexes have been studied will be reviewed, and variations in synaptonemal complex structure noted. This will be followed by an examination of the
Christopher Bob Gillies, Peter B. Moens
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Synaptonemal complex karyotype of Eimeria tenella
International Journal for Parasitology, 2005In most organisms, biological variability rests on the behaviour of the chromosomes in the meiotic context. Despite the importance of meiosis, very little is known about the meiotic behaviour of the Eimeria chromosomes. The aim of the present study is to describe the standard synaptonemal complex karyotype from Eimeria tenella oocyst spreads by ...
Margarita Gallego +4 more
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Changes of the synaptonemal complex at the end of pachytene
Human Genetics, 1973Observations on the changes of the synaptonemal complex at the end of pachytene and in diplotene are reported. The synaptonemal complex disintegrates in diplotene by progressive disjoining of the lateral arms. The structures of the pairing space disappear.
W. Schmidt, E. Schleiermacher
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Searching for synaptonemal complex proteins and their genes
Developmental Genetics, 1992AbstractAs an alternative to the production and use of monoclonal antisynaptonemal complex (SC) antibodies to isolate SC genes, we have explored the use of polyclonal anti‐SC antibodies to identify SC genes from a cDNA expression library. The method proved relatively simple, reliable, and fast and has yielded two SC genes.
Peter B. Moens +5 more
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Scanning electron microscopy of synaptonemal complexes
Chromosome Research, 1993The novel application of scanning electron microscopy to study whole-mount surface-spread synaptonemal complex complements of rye (Secale cereale) and rat (Rattus norvegicus) is described. Scanning electron microscopy is able to resolve the third dimension in such preparations and improve the tracing of the continuity of lateral elements without losing
I. ap Gwynn, Glyn Jenkins, A. L. Barlow
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