Results 21 to 30 of about 1,536,776 (399)

Cytogenomics of Deschampsia P. Beauv. (Poaceae) Species Based on Sequence Analyses and FISH Mapping of CON/COM Satellite DNA Families

open access: yesPlants, 2021
The genus Deschampsia P. Beauv. (Poaceae) involves a group of widespread polymorphic species, and many of them are highly tolerant to stressful environmental conditions. Genome diversity and chromosomal phylogeny within the genus are still insufficiently
Alexandra V. Amosova   +6 more
doaj   +1 more source

Architecture of metaphase chromosomes and chromosome scaffolds. [PDF]

open access: yesThe Journal of cell biology, 1983
We have developed procedures for depositing intact mitotic chromosomes and isolated residual scaffolds on electron microscope grids at controlled and reproducible levels of compaction. The chromosomes were isolated using a recently developed aqueous method. Our study has addressed two different aspects of chromosome structure.
Earnshaw, William C.   +1 more
openaire   +4 more sources

The Curious Case of Nonrepetitive Centromeric DNA Sequences in Candida auris and Related Species

open access: yesmBio, 2021
2009 saw the first description of Candida auris, a yeast pathogen of humans. C. auris has since grown into a global problem in intensive care settings, where it causes systemic infections in patients with underlying health issues.
Alexander Lorenz, Nicolas Papon
doaj   +1 more source

HIM-10 is required for kinetochore structure and function on Caenorhabditis elegans holocentric chromosomes. [PDF]

open access: yes, 2001
Macromolecular structures called kinetochores attach and move chromosomes within the spindle during chromosome segregation. Using electron microscopy, we identified a structure on the holocentric mitotic and meiotic chromosomes of Caenorhabditis elegans ...
Albertson   +33 more
core   +2 more sources

The Emerging Role of the Cytoskeleton in Chromosome Dynamics

open access: yesFrontiers in Genetics, 2017
Chromosomes underlie a dynamic organization that fulfills functional roles in processes like transcription, DNA repair, nuclear envelope stability, and cell division.
Maya Spichal, Emmanuelle Fabre
doaj   +1 more source

Hexavalents in spermatocytes of Robertsonian heterozygotes between Mus m. domesticus 2n 26 from the Vulcano and Lipari Islands (Aeolian Archipelago, Italy) [PDF]

open access: yes, 2018
The size and shape of the chromosomes, as well as the chromosomal domains that compose them, are determinants in the distribution and interaction between the bivalents within the nucleus of spermatocytes in prophase I of meiosis.
Eliana Ayarza   +6 more
core   +3 more sources

A method for nucleic acid hybridization to isolated chromosomes in suspension [PDF]

open access: yes, 1987
A procedure was developed to provide differential fluorescent staining of metaphase chromosomes in suspension following nucleic acid hybridization. For this purpose metaphase chromosomes were isolated from a Chinese hamster x human hybrid cell line ...
Bier, Frank   +5 more
core   +1 more source

NOMENCLATURE FOR CENTROMERIC POSITION ON CHROMOSOMES

open access: yes, 2009
N the inorphologic identification of chromosomes, the location of the I centromere is the most useful landmark, and one which is characterized by great constancy. It would seem that not much could be added to the definitions by E. B. WILSON (1928) of the
A. Levan, K. Fredga, A. Sandberg
semanticscholar   +1 more source

Chromosomal aberrations in transitional cell carcinoma that are predictive of disease outcome are independent of polyploidy [PDF]

open access: yes, 1999
Objective To determine whether aneusomy for chromosomes 7, 9 and 17 (reported to predict recurrence in up to 65% of patients with superficial transitional cell bladder cancer and thus providing the opportunity for early and effective treatment) reflects ...
Adie, L.   +4 more
core   +1 more source

Triple-Helical DNA in Drosophila Heterochromatin

open access: yesCells, 2018
Polynucleotide chains obeying Watson-Crick pairing are apt to form non-canonical complexes such as triple-helical nucleic acids. From early characterization in vitro, their occurrence in vivo has been strengthened by increasing evidence, although most ...
Eduardo Gorab
doaj   +1 more source

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