Results 41 to 50 of about 87,751 (339)

Comparative gene mapping in Arabidopsis lyrata chromosomes 6 and 7 and A thaliana chromosome IV: evolutionary history, rearrangements and local recombination rates [PDF]

open access: yes, 2006
We have increased the density of genetic markers on the Arabidopsis lyrata chromosomes AL6 and AL7 corresponding to the A. thaliana chromosome IV, in order to determine chromosome rearrangements between these two species, and to compare recombination ...
Hansson, Bengt   +9 more
core   +1 more source

Atypical centromeres in plants – what they can tell us

open access: yesFrontiers in Plant Science, 2015
The centromere, visible as the primary constriction of condensed metaphase chromosomes, is a defined chromosomal locus essential for genome stability. It mediates transient assembly of a multi-protein complex, the kinetochore, which enables interaction ...
Maria eCuacos   +2 more
doaj   +1 more source

Point centromere activity requires an optimal level of centromeric noncoding RNA

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance Budding yeast harbors a simple point centromere, which is originally believed to be sequence dependent without much epigenetic regulation and is transcription incompatible, as inserting a strong promoter upstream inactivates the centromere ...
Y. Ling, K. Yuen
semanticscholar   +1 more source

Chromosome Centromeres: Structural and Analytical Investigations with High Resolution Scanning Electron Microscopy in Combination with Focused Ion Beam Milling [PDF]

open access: yes, 2009
Whole mount mitotic metaphase chromosomes of different plants and animals were investigated with high resolution field emission scanning electron microscopy (FESEM) to study the ultrastructural organization of centromeres, including metacentric ...
Schroeder-Reiter, E., Wanner, Gerhard
core   +1 more source

Transposable elements: genome innovation, chromosome diversity, and centromere conflict

open access: yesChromosome Research, 2018
Although it was nearly 70 years ago when transposable elements (TEs) were first discovered “jumping” from one genomic location to another, TEs are now recognized as contributors to genomic innovations as well as genome instability across a wide variety ...
Savannah J. Klein, R. O’Neill
semanticscholar   +1 more source

Centromere-associated repeat arrays on Trypanosoma brucei chromosomes are much more extensive than predicted. [PDF]

open access: yes, 2012
BACKGROUND: African trypanosomes belong to a eukaryotic lineage which displays many unusual genetic features. The mechanisms of chromosome segregation in these diploid protozoan parasites are poorly understood. Centromeres in Trypanosoma brucei have been
Bot, Christopher   +9 more
core   +1 more source

Centromere scission drives chromosome shuffling and reproductive isolation

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance The centromere is an essential chromosomal element that enables faithful segregation of chromosomes during cell division. In many species, centromeres are enriched in transposons and repetitive elements, and centromeres have been proposed to
V. Yadav   +3 more
semanticscholar   +1 more source

Comparative gene mapping in Arabidopsis lyrata chromosomes 1 and 2 and the corresponding A. thaliana chromosome 1: recombination rates, rearrangements and centromere location [PDF]

open access: yes, 2006
To add detail to the genetic map of Arabidopsis lyrata, and compare it with that of A. thaliana, we have developed many additional markers in the A. lyrata linkage groups, LG1 and LG2, corresponding to A. thaliana chromosome 1.
Preuss, S   +4 more
core   +1 more source

Sequential assembly of centromeric proteins in male mouse meiosis. [PDF]

open access: yesPLoS Genetics, 2009
The assembly of the mitotic centromere has been extensively studied in recent years, revealing the sequence and regulation of protein loading to this chromosome domain. However, few studies have analyzed centromere assembly during mammalian meiosis. This
María Teresa Parra   +6 more
doaj   +1 more source

Gene replacement strategies validate the use of functional tags on centromeric chromatin and invalidate an essential role for CENP-AK124ub

open access: yesCell Reports, 2021
Summary: Functional tags are ubiquitous in cell biology, and for studies of one chromosomal locus, the centromere, tags have been remarkably useful. The centromere directs chromosome inheritance at cell division. The location of the centromere is defined
Catalina Salinas-Luypaert   +6 more
doaj   +1 more source

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