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Pairing at the chromosomal level
Journal of Cellular Physiology, 1967The discovery of the phenomenon of nonhomologous pairing in the female of Drosophila melanogaster provided a genetic tool for analyzing chromosome behavior, which has made it possible to establish a temporal order of meiotic events that includes two types of pairing, one preceding exchange (exchange pairing) and one following exchange (distributive ...
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Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1977
Commonly accepted precepts are challenged : (1) that homologous chromosome pairing is normally mediated by nuclear envelope attachment sites; (2) that crossover site establishment awaits synaptic completion; and (3) that it is the function of the synaptonemal complex to hold homologues in register so that equal crossing over can occur, and perhaps to ...
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Commonly accepted precepts are challenged : (1) that homologous chromosome pairing is normally mediated by nuclear envelope attachment sites; (2) that crossover site establishment awaits synaptic completion; and (3) that it is the function of the synaptonemal complex to hold homologues in register so that equal crossing over can occur, and perhaps to ...
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Genome, 2011
The ph-like genes in the Chinese common wheat landrace Kaixian-luohanmai (KL) induce homoeologous pairing in hybrids with alien species. In the present study, meiotic phenotypic differences on homoeologous chromosome pairing at metaphase I between ...
M. Hao +8 more
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The ph-like genes in the Chinese common wheat landrace Kaixian-luohanmai (KL) induce homoeologous pairing in hybrids with alien species. In the present study, meiotic phenotypic differences on homoeologous chromosome pairing at metaphase I between ...
M. Hao +8 more
semanticscholar +1 more source
Centromere pairing precedes meiotic chromosome pairing in plants
Science China Life Sciences, 2017Meiosis is a specialized eukaryotic cell division, in which diploid cells undergo a single round of DNA replication and two rounds of nuclear division to produce haploid gametes. In most eukaryotes, the core events of meiotic prophase I are chromosomal pairing, synapsis and recombination.
Fangpu Han, Jing Zhang
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Meiotic segregation of a homeologous chromosome pair
Molecular Genetics and Genomics, 2003During meiosis, the alignment of homologous chromosomes facilitates their subsequent migration away from one another to opposite spindle poles at anaphase I. Recombination is part of the mechanism by which chromosomes identify their homologous partners, and serves to link the homologs in a way that, in some organisms, has been shown to promote proper ...
M. Angelichio +5 more
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THE PAIRING OF AN ALIEN CHROMOSOME WITH HOMOEOLOGOUS CHROMOSOMES OF WHEAT
Canadian Journal of Genetics and Cytology, 1972The homoeology of chromosome A of Triticum umbellulatum has been determined by studying its pairing relationships with wheat telocentrics in hybrids having the chromosome constitution of 20 wheat chromosomes + one wheat telocentric chromosome + seven Triticum speltoides chromosomes + chromosome A.
Gordon Kimber, Raghbir S. Athwal
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CHROMOSOME PAIRING IN HEXAPLOID TRITICALE [PDF]
Canadian Journal of Genetics and Cytology, 1971 A durum wheat background was shown to suppress the meiotic pairing of chromosomes of Secale montanum Guss. with homoeologues of S. cereale L. in hexaploid triticale. This effect was attributed to the activity of the 5BL diploidising system, apparently active in tetraploid wheat.
J. B. Thomas, P. J. Kaltsikes
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THE EFFECT OF COLCHICINE ON CHROMOSOME PAIRING
Canadian Journal of Genetics and Cytology, 1977Beginning at 120 hours prior to first metaphase of meiosis (MI) a 0.03% aqueous solution of colchicine was injected into the boot of pentaploid (hexaploid triticale × tetraploid wheat) hybrids developing at 20 °C ± 1° under continuous illumination. Colchicine applied 40 h or less prior to MI had no effect on chromosome pairing, while its application 40
P. J. Kaltsikes, J. B. Thomas
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Chromosome Pairing in Autotetraploid Lolium
Biochemie und Physiologie der Pflanzen, 1973Summary Cytological investigations have been made in the autotetraploids of two species ( Lolium temulentum and L. persicum ). Correlations between different meiotic metrics were computed. Comparisons between the tetraploids and their diploid parents were also made.
C. P. Malik, R.C. Tripathi, T.N. Mary
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Joint Classification and Pairing of Human Chromosomes
IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2005We reexamine the problems of computer-aided classification and pairing of human chromosomes, and propose to jointly optimize the solutions of these two related problems. The combined problem is formulated into one of optimal three-dimensional assignment with an objective function of maximum likelihood. This formulation poses two technical challenges: 1)
Abhijit Sinha +2 more
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