Results 61 to 70 of about 5,821 (215)
Relationship of chromocenter number, size, and density to plant biomass
Caryologia, 1996 SUMMARYA variety of plant species and cultivars were stained for chromocenters using the barium hydroxide, sodium saline citrate (SSC), Giemsa procedure (DNA denaturation, incubation-renaturation, staining), in order to test the hypothesis that larger (biomass) species have larger, more numerous, and more intensely-staining chromocenters.
J. Edelman, Yue Lin
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Robertsonian chromosomes and the nuclear architecture of mouse meiotic prophase spermatocytes [PDF]
, 2014 BACKGROUND: The nuclear architecture of meiotic prophase spermatocytes is based on higher-order patterns of spatial associations among chromosomal domains from different bivalents.
Catalina Manieu +7 more
core +2 more sources
A multi-layered structure of the interphase chromocenter revealed by proximity-based biotinylation
Nucleic Acids Research, 2020 AbstractDuring interphase centromeres often coalesce into a small number of chromocenters, which can be visualized as distinct, DAPI dense nuclear domains. Intact chromocenters play a major role in maintaining genome stability as they stabilize the transcriptionally silent state of repetitive DNA while ensuring centromere function.
Natalia Y. Kochanova +8 more
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Neurogenesis and the Epigenetic Landscape: Role of Histone Modifications and Chromatin Remodeling
Brain and Behavior, Volume 16, Issue 2, February 2026.Histone methylation and acetylation modulate gene expression by inducing chromatin condensation or relaxation, which in turn regulates transcriptional activity and impacts neurogenesis. ABSTRACT Aims The purpose of this review is to examine how epigenetic regulation particularly chromatin modification and histone methylation controls gene expression ...
Degisew Yinur Mengistu +1 more
wiley +1 more source
Psyche: A Journal of Entomology, 2010 In some testicular lobes of the Pentatomidae there may be occurrence of atypical spermatogenesis or polymegaly, leading to the production of nonfertile sperm.
Hederson Vinicius de Souza +1 more
doaj +1 more source
Role of the ATPase/helicase maleless (MLE) in the assembly, targeting, spreading and function of the male-specific lethal (MSL) complex of Drosophila [PDF]
, 2011 Background The male-specific lethal (MSL) complex of Drosophila remodels the chromatin of the X chromosome in males to enhance the level of transcription of most X-linked genes, and thereby achieve dosage compensation.
Rosa Morra +3 more
core +1 more source
Zipping up the Synaptonemal Complex: Pathways to Homologous Chromosome Synapsis
BioEssays, Volume 48, Issue 1, January 2026.The synaptonemal complex (SC) is a conserved protein structure that assembles between homologous chromosomes during meiosis. Here, we review pathways promoting homologous synapsis across model organisms, examining coordination with homolog pairing and recombination, spatiotemporal regulation of SC assembly, and the conserved molecular modules coupling ...
Ariel L. Gold, Yumi Kim
wiley +1 more source
Changes in nuclear phenotypes following cold shock in Panstrongylus megistus (Burmeister)
Memorias do Instituto Oswaldo Cruz, 2000 The nuclear phenotypes of Malpighian tubule epithelial cells of 5th instar male nymphs of the blood-sucking insect Panstrongylus megistus were studied immediately after a short (1 h) cold shock at 0ºC, and 10 and 30 days later.
Simone L Garcia +3 more
doaj +1 more source
Tau promotes neurodegeneration through global chromatin relaxation [PDF]
, 2014 The microtubule-associated protein tau is involved in a number of neurodegenerative disorders, including Alzheimer’s disease (AD). Previous studies link oxidative stress and subsequent DNA damage to neuronal death in AD and related tauopathies. Since DNA
Feany, Mel B. +3 more
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Ecology and Evolution, Volume 16, Issue 1, January 2026.This study integrates cytogenetic and ecological analyses of two endemic Chinese alpine lilies, Lilium lophophorum (2n = 24) and L. nanum (2n = 48), to establish a foundational understanding of their chromosomal diversity and distribution patterns. We document substantial intraspecific karyotypic variation in diploid L.
Tengfei Gui +5 more
wiley +1 more source