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Evolution of karyotypes in snakes
Chromosoma, 1972Karyotype analysis and morphometric measurement of the chromosomes of 17 species of snakes have been done. Chromosomes of different species so far worked out in each family have been compared using quantitative methods to derive chromosomal affinities between species of different taxonomic categories.
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Systematic Zoology, 1983
Haiduk and Baker (1982) gave an insightful interpretation of rate variation in karyotype evolution. Their descriptive nomenclature, however, is misleading-"karyotypic megaevolution" (Baker and Bickham, 1980) is an inappropriate term to apply to what Haiduk and Baker recognize as simply an exceedingly rapid rate of karyotype evolution.
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Haiduk and Baker (1982) gave an insightful interpretation of rate variation in karyotype evolution. Their descriptive nomenclature, however, is misleading-"karyotypic megaevolution" (Baker and Bickham, 1980) is an inappropriate term to apply to what Haiduk and Baker recognize as simply an exceedingly rapid rate of karyotype evolution.
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Karyotypic evolution in patients with myelodysplastic syndromes
Cancer Genetics and Cytogenetics, 1985Serial cytogenetic studies were performed in 33 patients with myelodysplastic syndrome in order to establish the frequency of karyotypic evolution and to correlate the chromosome and clinical findings during the course of the disease. Fifteen of the 33 patients (45%) showed abnormalities in the first cytogenetic study and this percentage increased to ...
J, Benítez +3 more
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Karyotypic evolution in a B-cell lymphoma
Cancer Genetics and Cytogenetics, 1987A B-cell lymphoma in the lung of a 59-year-old woman showed a near-pentaploid karyotype and chromosomal changes indicating a t(8;14) in cells from a pleural aspirate. Cells from metastases to the skin and a second pleural aspirate were pseudodiploid, but showed separate further complex cytogenetic changes.
P H, Fitzgerald +4 more
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Clonal karyotypic evolution in a pediatric neurofibrosarcoma
Cancer Genetics and Cytogenetics, 1995A retroperitoneal neurofibrosarcoma infiltrating the spine of a 2-year-old boy was investigated cytogenetically three times over a 5-month period. The first sample, from a diagnostic fine-needle aspiration biopsy, had a supernumerary i(1)(q10) as the sole clonal aberration; two cells showed monosomy 18 in addition to the isochromosome.
F, Mertens +6 more
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Karyotype evolution by centromeric fission inZamia (Cycadales)
Plant Systematics and Evolution, 1984The chromosome numbers of several species ofZamia from Mexico are reported.Z. paucijuga, distributed from central Oaxaca to Nayarit, has been found to have 2n = 23, 25, 26, 27 and 28. 2n = 28 is the highest chromosome number yet found in the cycads. Karyotypes of this species differ principally in the number of telocentric and metacentric chromosomes ...
MORETTI, ALDO, SABATO S.
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Considerations of karyotypic evolution within Vespertilionidae
Experientia, 1977(Uploaded by Plazi for the Bat Literature Project) The karyotypes of each 2 species of Nyctalus and Murina are examined. It is assumed that the diploid number of vespertilionid ancestor was 44 with a fundamental number of 50 and that the mechanism of karyotypic evolution within subfamily Vespertilioninae is mainly caused by centric fusion. On the other
Andō, K., Tagawa, T., Uchida, T. A.
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European Journal of Cancer (1965), 1973
Abstract The trends of karyotype evolution were investigated in a material consisting of 3633 karyotyped Ph1-positive metaphases obtained from 48 patients with chronic granulocytic leukaemia. In agreement with observations by others, the majority of the chromosomes gained during progressive evolution were observed to be Ph1, F and, in particular, C ...
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Abstract The trends of karyotype evolution were investigated in a material consisting of 3633 karyotyped Ph1-positive metaphases obtained from 48 patients with chronic granulocytic leukaemia. In agreement with observations by others, the majority of the chromosomes gained during progressive evolution were observed to be Ph1, F and, in particular, C ...
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Karyotype Evolution: Concepts and Applications
2017The karyotype is the characterization of number, size, and morphology of the set of chromosomes of a species, as seen under the microscope. Studying the karyotypic evolution of a group of organisms is necessary to obtain data such as number of chromosomes, the position of the centromeres, and the number and positions of secondary constrictions and ...
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[Karyotype evolution of suborder (Ruminantia)].
Tsitologiia, 2013Suborder Ruminantia is the largest taxa in order Cetartiodactyla and includes species with great differences in morphology and diploid numbers of chromosomes. To date, the main chromosome changes that formed karyotypes of modern species of this suborder have been described by comparative chromosome painting.
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