Results 51 to 60 of about 1,418 (178)

Chromosome numbers in the Triatominae (Hemiptera-Reduviidae): a review

open access: yesMemorias do Instituto Oswaldo Cruz, 1996
The chromosome numbers of 46 out of the 122 currently recognized species of Triatominae (Hemiptera, Reduviidae) are summarized. We present the number of autosomes, the sex mechanism and the first reference for each karyotype.
Francisco Panzera   +6 more
doaj   +1 more source

The Role of Satellite DNAs in Genome Architecture and Sex Chromosome Evolution in Crambidae Moths

open access: yesFrontiers in Genetics, 2021
Tandem repeats are important parts of eukaryotic genomes being crucial e.g., for centromere and telomere function and chromatin modulation. In Lepidoptera, knowledge of tandem repeats is very limited despite the growing number of sequenced genomes.
Diogo C. Cabral-de-Mello   +6 more
doaj   +1 more source

Kinetochore size correlates with chromosome size in Star of Bethlehem (Ornithogalum kochii Parl., Asparagaceae)

open access: yesPlant Biology, EarlyView.
Cytogenetic quantification of KNL1‐labelled kinetochores in Ornithogalum kochii reveals a significant positive scaling relationship between chromosome size and kinetochore size, demonstrating that chromosome–kinetochore scaling operates even across moderate intra‐karyotype size variation.
K. Panda, M. Hroneš, F. Zedek
wiley   +1 more source

Chromosome complement and meiosis in three species of the Neotropical bug genus Antiteuchus (Heteroptera, Pentatomidae, Discocephalinae)

open access: yesGenetics and Molecular Biology, 2006
Orcein staining of spermatocytes was used to study the meiotic behavior of holocentric chromosomes in three member of the genus Antiteuchus (commonly known as stink bugs). We describe and illustrate the karyotype of Antiteuchus mixtus, A. sepulcralis and
Cecilia Lanzone, Maria José de Souza
doaj   +1 more source

EasyCen: A Lightweight Framework for Centromere Localisation and Repeat‐Organisation Profiling in Telomere‐to‐Telomere Genomes

open access: yesMolecular Ecology Resources, Volume 26, Issue 5, July 2026.
ABSTRACT Accurate identification of centromeres in telomere‐to‐telomere (T2T) genomes remains difficult due to the rapid evolution of centromeric repeats and their lack of conserved sequence features. In this study, we present EasyCen, a lightweight sequence‐based framework for centromere identification and repeat‐architecture profiling across various ...
Yunyun Lv, Yanping Li, Jia Li, Xidong Mu
wiley   +1 more source

Supplementary Material for: Similar Sister Chromatid Arrangement in Mono- and Holocentric Plant Chromosomes

open access: yes, 2016
Due to the X-shape formation at somatic metaphase, the arrangement of the sister chromatids is obvious in monocentric chromosomes. In contrast, the sister chromatids of holocentric chromosomes cannot be distinguished even at mitotic metaphase. To clarify
Schubert V. (2888129)   +3 more
core   +1 more source

Spider Mites: Genetic Models to Inform Herbivore and Chelicerate Biology

open access: yesBioEssays, Volume 48, Issue 5, May 2026.
Chelicerates include spiders, scorpions and ticks, and also spider mites that damage crops. Many of the features that make spider mites crop pests have facilitated their adoption as genetically tractable chelicerates. The expanding genetic toolkit developed using spider mites has potential to inform genetic studies in other chelicerates as well ...
Richard M. Clark   +3 more
wiley   +1 more source

Integrative taxonomy supports DNA barcoding in revealing an abundant cryptic species in the United States Coastal Plain

open access: yesJournal of Systematics and Evolution, Volume 64, Issue 3, Page 520-535, May 2026.
A densely sampled phylogeny of Carex section Lupulinae (107 specimens) is presented, along with a new cryptic species from the southern United States. This species is locally abundant and genetically and morphologically distinct from other Lupulinae. An identification key is provided and phenological and ecological patterns are discussed.
Étienne Lacroix‐Carignan   +4 more
wiley   +1 more source

Data from: The phylogenetic origins and evolutionary history of holocentric chromosomes

open access: yes, 2016
In eukaryotes, we can recognize two kinds of chromosomes, based on the location of the kinetochores. The majority of eukaryotes have monocentric chromosomes, in which kinetochoric activity is concentrated in a single locus.
Escudero, Marcial   +2 more
core   +1 more source

Chromosome aberrations in the holocentric chromosomes of Philosamia ricini (Saturniidae)

open access: yesThe Journal of Research on the Lepidoptera, 1986
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

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