Results 41 to 50 of about 2,455 (197)

RepeatOBserver: Tandem Repeat Visualisation and Putative Centromere Detection. [PDF]

open access: yesMol Ecol Resour
ABSTRACT Tandem repeats play an important role in centromere structure, subtelomeric regions, DNA methylation, recombination and the regulation of gene activity. Analysis of their distribution in genomes offers a potential means for predicting putative centromere locations, which continues to be a challenge for genome annotation.
Elphinstone C   +3 more
europepmc   +2 more sources

X-linked heterochromatin distribution in the holocentric chromosomes of the green apple aphid Aphis pomi [PDF]

open access: yes, 2005
Chromatin organization in the holocentric chromosomes of the green apple aphid Aphis pomi has been investigated at a cytological level after C-banding, NOR, Giemsa, fluorochrome staining and fluorescent in situ hybridization (FISH).
A. Criniti   +5 more
core   +1 more source

Cytogenetic characterization of telomeres in the holocentric chromosomes of the lepidopteran Mamestra brassicae [PDF]

open access: yes, 2002
Telomeres of the Mamestra brassica holocentric chromosomes were studied by Southern blotting, in-situ hybridization and Bal31 assay evidencing the presence of the telomeric (TTAGG)(n) repeat.
MANDRIOLI, Mauro
core   +1 more source

Unique territorial and compartmental organization of chromosomes in the holocentric silkmoth

open access: yes, 2023
Abstract The hallmarks of chromosome organization in multicellular eukaryotes are chromosome territories (CT), chromatin compartments, and insulated domains, including topologically associated domains (TADs). Yet, most of these elements of chromosome organization are derived from analyses of a limited set of model organisms, while large ...
J. Gil   +12 more
openaire   +3 more sources

Chromosome Segregation Is Biased by Kinetochore Size [PDF]

open access: yes, 2018
Chromosome missegregation during mitosis or meiosis is a hallmark of cancer and the main cause of prenatal death in humans. The gain or loss of specific chromosomes is thought to be random, with cell viability being essentially determined by selection ...
Aguiar, P   +8 more
core   +2 more sources

The Glanville fritillary genome retains an ancient karyotype and reveals selective chromosomal fusions in Lepidoptera [PDF]

open access: yes, 2014
Previous studies have reported that chromosome synteny in Lepidoptera has been well conserved, yet the number of haploid chromosomes varies widely from 5 to 223.
Waterhouse, Robert M.
core   +4 more sources

Karyotype rearrangements and telomere analysis in Myzus persicae (Hemiptera, Aphididae) strains collected on Lavandula sp. plants [PDF]

open access: yes, 2014
Karyotype analysis of nine strains of the peach-potato aphid Myzus persicae (Sulzer, 1776), collected on Lavandula sp. plants, evidenced showed that five of them had a standard 2n = 12 karyotype, one possessed a fragmentation of the X chromosome ...
F. Zanasi   +2 more
core   +11 more sources

Spermatogenesis and nucleolar activity in Triatoma klugi (triatomine, Heteroptera)

open access: yesGenetics and Molecular Biology, 2008
Triatoma klugi is a Chagas disease vector in the Rio Grande do Sul State. Triatominae chromosomes are holocentric and sex chromosomes segregation is post-reductional. In this paper we describe the karyotype of male T.
Laiana Cristina da Costa   +2 more
doaj   +1 more source

Distribution and molecular composition of heterochromatin in the holocentric chromosomes of the aphid Rhopalosiphum padi (Hemiptera: Aphididae) [PDF]

open access: yes, 2010
In order to study the structure of holocentric chromosomes in aphids, the localization and the composition of Rhopalosiphum padi heterochromatin and rDNA genes have been evaluated at cytogenetic and molecular level.
MANDRIOLI, Mauro   +2 more
core   +1 more source

Cytogenetics as a tool for Triatomine species distinction (Hemiptera-Reduviidae)

open access: yesMemorias do Instituto Oswaldo Cruz, 1992
Several cytogenetic traits were tested a species diagnostic characters on five triatomine species: Rhodnius pictipes, R. nasutus, R. robustus, Triatoma matogrossensis and T. pseudomaculata. Four of them are described for the first time.
Ruben Perez   +6 more
doaj   +1 more source

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