Centromere sizes determine Unique Meiosis in Dogrose
The dogrose (Rosa canina), the wild rose plant species, has a pentaploid genome with 35 chromosomes............
#Canina #Caninameiosis #Cell #Celldivision #Centromere #Dogrose #Meiosis #Pentapoidy
Umesh Prasad
Centromere sizes determine Unique Meiosis in Dogrose
The dogrose (Rosa canina), the wild rose plant species, has a pentaploid genome with 35 chromosomes............
#Canina #Caninameiosis #Cell #Celldivision #Centromere #Dogrose #Meiosis #Pentapoidy
Umesh Prasad
1-Jan-2025
Revealing a key mechanism of rapid centromere #evolution
Researchers clarify a key mechanism of genetic element insertions in the #centromere, the “waist” of a #chromosome
https://www.eurekalert.org/news-releases/1069128 #science #DNA #MolecularBiology #transposon
A joint research group team led by Sayuri Tsukahara and Tetsuji Kakutani of the University of Tokyo has clarified a mechanism of how retrotransposons, genetic elements that can “jump around” chromosomes and are known drivers of evolution, preferentially insert in the centromere. The findings were published in the journal Nature.
Centromeres reside in rapidly evolving, repeat-rich genomic regions, despite their essential function in chromosome segregation. This study of centromere evolution over short evolutionary timescales in Drosophila reveals dramatic centromere reorganization involving recurrent shifts between retroelements and satellite DNAs.
Scientists uncover mechanism preserving #centromere during #cell_division.
#mitosis #PLK1 #Mis18 #CENP_A #HJURP #phosphorylation_cascade
https://phys.org/news/2024-09-scientists-uncover-mechanism-centromere-cell.html
Researchers reveal how #acetylation regulates #centromere dynamics, #chromosome #segregation and #mitotic progression.
https://phys.org/news/2024-05-reveal-acetylation-centromere-dynamics-chromosome.html
Cell division produces new cells, which underpin life proliferation and development. Mitosis is the shortest and the most dynamic phase of the cell cycle. During mitosis, chromosomes are evenly distributed between the two daughter cells, preserving the integrity of the genome.
#Centromere research yields new insights into the mechanisms of #chromosome #segregation errors.
https://phys.org/news/2024-05-centromere-yields-insights-mechanisms-chromosome.html
Researchers from the Hubrecht Institute's Kops group, in collaboration with researchers from the University of Edinburgh, have made a surprising new discovery in the structure of the centromere, a structure involved in ensuring that chromosomes are segregated properly when a cell divides. Mistakes in chromosome segregation can lead to cell death and cancer development.
Study gives first view of #centromere variation and #evolution.
https://phys.org/news/2024-04-view-centromere-variation-evolution.html
New insights in the #regulation of #genetic information exchange.
#chromosomes #centromere #crossing_over
https://phys.org/news/2024-02-insights-genetic-exchange.html
Within every cell in our body, our DNA is tightly bundled with proteins to form structures known as chromosomes. The commonly known shape of a chromosome relates to an X-shaped appearance in many organisms. The formation of the X-shaped chromosome results from a close connection at a site called the centromere. This centromere acts as a link between the sister chromatids, the identical copies that are created during DNA replication.
Scientific European
Umesh Prasad
michael
PLOS Biology
Benjamin Carr, Ph.D. 👨🏻💻🧬
CellBioNews
