Monosomy is prresence/absence of one of the chromosome of a pair. eg. for sex chromosomes normal condition is XX or XY some times due to non disjunction the individual become XO. here O means no chromosome. this is called Turner's syndrome.
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www.biology-online.org/dictionary/Disjunction
www.biology-online.org/dictionary/Disjunction
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In an abstract (Records Genetics Society-1944, p. 14) it was reported that chromosome disjunction in a plant heterozygous for interchange T5-6c was markedly changed when the position of the chromosome 5 centromere was shifted nearer the center of the cross by the presence of a homozygous inversion in chromosome 5.
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www.agron.missouri.edu/mnl/19/23Burnham.htm
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Chromosome disjunction (See News Letter 19:31. 1945). ... When the inversion is in the translocated chromosome, crossovers within the inversion do not give rise to the cytologically recognizable half-disjunction" quartets; whereas when the inversion is in the normal chromosome these crossovers are recognizable in that manner.
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www.agron.missouri.edu/mnl/21/26Burnham.htm
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Centromere-specific DNA probes for chromosomes 4, 7 and 18 were used to simultaneously analyze chromosome loss, non-disjunction, breaks within the labeled region, and nucleoplasmic bridges induced by gamma rays in binucleated human lymphocytes. ... For chromosome loss, significant increases were observed at 2 and 4 Gy,
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www.medscape.com/medline/abstract/11182793
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Separase, the cysteine protease that cleaves cohesin and thereby triggers chromosome disjunction, is inhibited by both securin- and phosphorylation-dependent cyclin B1 binding.
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jcs.biologists.org/cgi/content/abstract/119/16/3325
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Minichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in Maize[W] ... Plant artificial chromosomes or engineered minichromosomes represent a potentially powerful research tool for understanding chromosome structure and function. Furthermore, they provide a means to assemble a collection...
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www.plantcell.org/cgi/content/full/19/12/3853
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Minichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in Maize[W] ... Related articles in Plant Cell: ... This article has been cited by other articles:
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www.plantcell.org/cgi/content/abstract/19/12/3853
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Maternal sex chromosome non-disjunction: evidence for X chromosome-specific risk factors. ... Among the MI cases, a majority (56%) had no detectable transitions and so absent recombination is an important factor for X chromosome non-disjunction. ... Non-disjunction of chromosome 13.
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www.ncbi.nlm.nih.gov/pubmed/11159943
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Nondisjunction - Wikipedia, the free encyclopedia
Nondisjunction ("not coming apart") is the failure of chromosome pairs to separate properly during cell division. This could arise from a failure of homologous chromosomes to separate in meiosis I, o...
en.wikipedia.org/wiki/Nondisjunction
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