Results 301 to 310 of about 405,684 (326)

SnapShot: Chromosome organization

Molecular Cell, 2022
Chromosomes in higher eukaryotes are folded at different length scales into loop extrusion domains, spatial compartments, and chromosome territories and exhibit interactions with nuclear structures such as the lamina. Microscopic methods can probe this structure by measuring positions of chromosomes in the nuclear space in individual cells, while ...
Rachel Patton, McCord, Yang, Xu, Heng, Li, Priyojit, Das, Rebeca, San Martin   +4 more
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Nucleolar organizing chromosomes ofRicinus

Theoretical and Applied Genetics, 1980
Pachytene chromosome morphology was compared in nine races ofRicinus communis L. (2n = 20), using pollen mother cells (PMCs) and light microscopy. Of the ten bivalents, only the two possessing nucleolar organizing regions (NORs), chromosomes 2 and 7, exhibit structural variations among the races.
H S, Paris, O, Shifriss, G, Jelenkovic
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Dynamic organization of mitotic chromosomes

Current Opinion in Cell Biology, 2017
The assembly of rod-shaped chromosomes during mitosis is an essential prerequisite for faithful segregation of genetic information into daughter cells. Despite the long history of chromosome research, it is only recently that we have acquired powerful approaches and crucial tools that help to unlock the secret of this seemingly complex process.
Kazuhisa, Kinoshita, Tatsuya, Hirano
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Paramutation and Chromosome Organization

The Quarterly Review of Biology, 1960
Two processes, mutation and paramutation, are postulated to account for the observed heritable changes in the immediate R region of chromosome 10 in maize. Mutation is sporadic, undirected, and yields stable alleles having distinctive effects on aleurone and plant pigmentation.
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Chromomeric organization of polytene chromosomes

Genetica, 1991
This is a review summarizing work carried out at the Laboratory of Molecular Cytogenetics in recent years. Problems of genetic organization of bands, interbands and puffs as well as intercalary heterochromatin and position effect variegation are discussed from the point of view of the dynamic model of polytene chromosome organization.
I F, Zhimulev, E S, Belyaeva
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Chromosomal organization of the genomes of small-chromosome plants

Russian Journal of Genetics, 2009
An effective approach to study the chromosome organization in genomes of plants with small chromosomes and/or with low-informative C-banding patterns was developed in the course of investigation of the karyotypes of cotton plant, camomile, flax, and pea. To increase the resolving power of chromosome analysis, methods were worked out for revealing early
O V, Muravenko, A V, Zelenin
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Organization of human mitotic chromosomes

Humangenetik, 1974
Examinations of human mitotic chromosomes using an electron microscope since the last review in “Humangenetik” (Schwarzacher, 1970) were summarized. Three methods were used for preparation: ultrathinnsectioning, spreading- and critical point drying and a method for comparing cells in the light and electron microscope.
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Investigating chromosome organization with genomic microarrays

Chromosome Research, 2005
DNA microarrays are increasingly being used to investigate the functional role of chromatin. These studies are enhanced by the development of high-resolution arrays covering either the whole genome or specific regions of selected chromosomes with large insert clones, PCR products or oligonucleotides of around 100 bp or less.
Woodfine, K, Carter, N P, Dunham, I, Fiegler, H   +3 more
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Human nucleolar organizer chromosomes: satellite associations

Chromosoma, 1976
The D and G group chromosomes from cultured human lymphocytes exhibit single and multiple satellite associations when stained with silver. Unlike earlier methods this simple and highly repeatable procedure shows physical attachments between satellited regions of various acrocentric autosomes.
T E, Denton, W M, Howell, J V, Barrett
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Genetic Organization of Polytene Chromosomes

1999
Publisher Summary The interphase polytene chromosome is morphologically differentiated into tightly compacted (the chromomeric) and decompacted (the interchomomeric) regions, as the chromatid from telomere to telomere has the appearance of a string with threaded beads, the chromomeres.
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