Results 161 to 170 of about 35,869 (203)

MEIOTIC CHROMOSOME BEHAVIOR IN MONOPLOID SUGARBEET

Canadian Journal of Genetics and Cytology, 1980
The meiotic behavior of a monoploid plant of sugarbeet (Beta vulgaris L.) was studied. At meta-anaphase I univalents, bivalents and trivalents, and secondary associations of up to three chromosomes were observed, with an average of 8.65 I + 0.16 II + 0.01 III per cell or 0.18 chiasmata per cell.
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Analysis of Meiotic Telomere Behavior in the Mouse

2016
Linear eukaryotic chromosomes are capped by the telomeres, which consist of highly repetitive nucleotide sequences bound by several telomere-specific proteins. While the general role of telomeres is to protect chromosomes from degradation and end-to-end fusion, during meiosis they are assigned with a distinct and without doubt highly fascinating ...
Jana, Link, Ricardo, Benavente, Manfred, Alsheimer   +2 more
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Meiotic behavior in Brachiaria humidicola (Poaceae) hybrids

Euphytica, 2011
In the genus Brachiaria, genetic variation can be exploited directly from germplasm collections or released using sexual reproduction in normally apomictic polyploids. The discovery of a natural sexual polyploid accession H031 of Brachiaria humidicola collected in Africa, opened new opportunities to exploit the genetic variation in this species.
Gléia Laverde Ricci, Alice Maria de Souza-Kaneshima, Maria Suely Pagliarini, Cacilda Borges do Valle   +3 more
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Chromosomal abnormalities, meiotic behavior and fertility in domestic animals

Cytogenetic and Genome Research, 2008
Since the advent of the surface microspreading technique for synaptonemal complex analysis, increasing interest in describing the synapsis patterns of chromosome abnormalities associated with fertility of domestic animals has been noticed during the past three decades. In spite of the number of scientific reports describing the occurrence of structural
Villagomez, D.A.F., Pinton, Alain
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The Meiotic Behavior of the Drosophila Oocyte

1970
Publisher Summary This chapter discusses the events that take place during meiosis of the Drosophila oocyte. Prior to the meiotic prophase, the chromosomes attach to specific sites on the inner surface of the nuclear envelope. The chromosomes replicate their entire DNA except for the synaptomeres.
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Meiotic behavior of a supernumerary chromosome in Magnaporthe oryzae

Current Genetics, 2003
A 1.2-Mb DNA band from an isolate of Magnaporthe oryzae was detected in a pulsed-field gel. A chromosomal entity corresponding to this band was observed at the mitotic metaphase stage. This minichromosome, carrying many transposable elements and two telomeres, was transmitted to ascosporic F(1) cultures in a non-Mendelian manner with frequent changes ...
I, Chuma, Y, Tosa, M, Taga, H, Nakayashiki, S, Mayama   +4 more
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The Molecular Control of Meiotic Chromosomal Behavior: Events in Early Meiotic Prophase in Drosophila Oocytes

Annual Review of Physiology, 2012
We review the critical events in early meiotic prophase in Drosophila melanogaster oocytes. We focus on four aspects of this process: the formation of the synaptonemal complex (SC) and its role in maintaining homologous chromosome pairings, the critical roles of the meiosis-specific process of centromere clustering in the formation of a full-length SC,
Cathleen M, Lake, R Scott, Hawley
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Meiotic Behavior in the Mushroom Collybia Maculata Var. Scorzonerea

Mycologia, 1968
(1968). Meiotic Behavior in the Mushroom Collybia Maculata Var. Scorzonerea. Mycologia: Vol. 60, No. 2, pp. 451-456.
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Meiotic Chromosome Behavior in a Human Male t(8;15) Carrier

Journal of Genetics and Genomics, 2014
Reciprocal translocation is one of the most common structural chromosomal rearrangements in human beings; it is widely recognized to be associated with male infertility. This association is mainly based on the abnormal chromosome behavior of the translocated chromosomes and sex chromosomes during meiosis prophase I in reciprocal translocation carriers.
Hanwei, Jiang, Liu, Wang, Yingxia, Cui, Zhipeng, Xu, Tonghang, Guo, Dongkai, Cheng, Peng, Xu, Wen, Yu, Qinghua, Shi   +8 more
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The unusual meiotic behavior of Elymus Wiegandii

Experimental Cell Research, 1950
At the onset of meiotic prophase, the meiocytes present a bizarre appearance (Figs. l-4). In ordinary meiosis the loosely reticulate fabric of the resting nucleus appears to ravel out into chromosome threads. Here, however, all the deeply staining part of the reticulum appears to gather, to be stripped from the threads, to coalesce into a number of ...
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