Results 171 to 180 of about 3,514 (209)
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Annals of Botany, 1984
Root tips prepared for metaphase chromosome analysis from seedlings germinated under microgravity on the Space Shuttle (oats and mung bean) or which were exposed to space flight as very young seedlings (sunflower) have been examined. Experimental constraints did not permit pre-fixation in space with a cytostatic agent but arrest was achieved in the ...
A D, Krikorian, S A, O'Connor
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Root tips prepared for metaphase chromosome analysis from seedlings germinated under microgravity on the Space Shuttle (oats and mung bean) or which were exposed to space flight as very young seedlings (sunflower) have been examined. Experimental constraints did not permit pre-fixation in space with a cytostatic agent but arrest was achieved in the ...
A D, Krikorian, S A, O'Connor
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Further karyological studies on Felidae
Chromosoma, 1965The karyotypes of the domestic cat and the tiger are presented. The diploid number for both species is 38. Autoradiographic studies on the cat chromosomes show that in females one X-chromosome is late replicating and in males the Y is late replicating. Other chromosomes bear late replicating segments.
T C, HSU, H H, REARDEN
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Karyology ofAcetabularia mediterranea
Protoplasma, 1990Meiotic and mitotic divisions of the nuclei ofAcetabularia mediterranea were studied with the aid of DAPI fluorochrome and fluorescence microscopy. We report, for the first time, the formation of 20 bivalents in the primary nucleus during the early stages of meiosis. The karyotype of 20 chromosomes in the secondary nuclei is described. The nucleoli are
Deepesh N. De, Sigrid Berger
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Chromosome markers and karyology of selachians
Journal of Experimental Zoology, 1989Among vertebrates, chondrichthyans exhibit peculiar karyotypes and total amount and composition of DNA very different from those of tetrapods and teleosteans. Selachians have relatively large genome sizes (more than 30 pg/N), which are inversely related to the fraction rich in adenine-thymine. Moreover, they show a high chromosome number (2n = 60-100),
STINGO, Vincenzo +2 more
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1994
Many recent karyological and karyosystematic studies have made successful attempts to incorporate not only chromosome counts, but also more detailed data on karyomorphology, chromosome banding, interphase nuclear organization, and DNA hybridization tests.
Martin Röser, Wilfried Morawetz
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Many recent karyological and karyosystematic studies have made successful attempts to incorporate not only chromosome counts, but also more detailed data on karyomorphology, chromosome banding, interphase nuclear organization, and DNA hybridization tests.
Martin Röser, Wilfried Morawetz
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Karyological observations on Polyclads
Hydrobiologia, 1981A karyological analysis of eight species of Polyclads has been carried out. A chromosome number of n = 10 for Stylochus alexandrinus and for Stylochus mediterraneus was ascertained on germinal lines. A chromosome number of 2n = 20 was ascertained from metaphasic plates from regenerative blastemas of Notoplana alcinoi and Leptoplana tremellaris.
Lodovico Galleni, Ileana Puccinelli
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[Karyologic analysis in erythroleukemia].
Bollettino della Societa italiana di biologia sperimentale, 1980We report the cytogenetic data of two patients with erythroleukemia showing the chromosome Ph'. In one case the chromosome Ph', as revealed with the GTG band technique was the result of a translocation involving the chromosomes 19 and 22. The aim of this work is to provide more contribution to the knowledge of the origin of the Ph' and to give data in ...
PALKA, Giandomenico +7 more
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The Karyological Basis of Atypia
Pathology - Research and Practice, 1985There is no distinct DNA-pattern correlating with the degree of dysplasia. Atypical DNA-histograms can be found in morphologically normal smears especially when earlier smears had been suspicious. They can also persist after hysterectomy. In cases of progression aneuploidy and large scatter dominate while in cases of regression the DNA values are ...
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Karyological observations on Lejeuneaceae
The Bryologist, 2010Abstract Karyological observations were made on 35 species belonging to 15 genera of Lejeuneaceae (Jungermanniopsida, Marchantiophyta) from China and Singapore. The chromosome numbers of 26 species representing five genera (Colura, Lepidolejeunea, Lopholejeunea, Schiffneriolejeunea, and Tuyamaella) are reported for the first time.
Min Zheng, Rui-Liang Zhu
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Counterstaining human chromosomes for flow karyology
Cytometry, 1984AbstractIsolated human metaphase chromosomes stained with the fluorochromes 4′‐6‐diamidino‐2‐phenylindole (DAPI) and chromomycin A3 (CA3), and counterstained with nonfluorescent netropsin (NTR), have been analyzed by dual‐laser flow cytometry.
J, Meyne +3 more
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