Results 61 to 70 of about 1,418 (178)
European Journal of Entomology, 2004 We analysed the chromosome complement and male meiosis in a natural population of Mepraia gajardoi (Hemiptera: Reduviidae: Triatominae). The normal karyotype of this species is 20 autosomes plus X1X2Y in males and X1X1X2X2 in females. We confirmed that M.
Ruben PÉREZ +4 more
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Phylogenetic systematics of Juncaceae
American Journal of Botany, Volume 113, Issue 3, March 2026.Abstract Premise Juncaceae has needed taxonomic revision for some time. Specifically, the genus Juncus s.l. is known to be paraphyletic because five small southern‐hemisphere genera have been shown repeatedly to be nested within it. In 2022, a new classification was proposed, based on phylogenies built from one nuclear and three plastid regions ...
Reed J. Kenny +2 more
wiley +1 more source
Analysis of heterochromatic epigenetic markers in the holocentric chromosomes of the aphid Acyrthosiphon pisum [PDF]
Chromosome Research, 2007 Monomethylated-K9 H3 histones (Me9H3) and heterochromatin protein 1 (HP1) are reported as heterochromatin markers in several eukaryotes possessing monocentric chromosomes. In order to confirm that these epigenetic markers are evolutionarily conserved, we sequenced the HP1 cDNA and verified the distribution of Me9H3 histones and HP1 in the holocentric ...
MANDRIOLI, Mauro, BORSATTI, Federica
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Selection and inertia in the evolution of holocentric chromosomes in sedges (Carex, Cyperaceae) [PDF]
New Phytologist, 2012 SummaryChanges in chromosome number as a result of fission and fusion in holocentrics have direct and immediate effects on the recombination rate. We investigate the support for the classic hypothesis that environmental stability selects for increased recombination rates.We employed a phylogenetic and cytogenetic data set from one of the most diverse ...
Marcial, Escudero +4 more
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Journal of Biogeography, Volume 53, Issue 1, January 2026.ABSTRACT Aim To investigate macroevolutionary and biogeographic patterns of chromosome number variation in ants (Formicidae), and to test whether chromosomal diversity is taxonomically structured, associated with species richness, varies with latitude, and accumulates over evolutionary time. Location Global.
Danon Clemes Cardoso +1 more
wiley +1 more source
Frontiers in Plant Science, 2020 Cyperaceae is a family of Monocotyledons comprised of species with holocentric chromosomes that are associated with intense dysploidy and polyploidy events.
Paula Burchardt +5 more
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New Phytologist, Volume 249, Issue 2, Page 1063-1084, January 2026.Summary Myrothamnus flabellifolia is a dioecious resurrection plant endemic to southern Africa that has become an important model for understanding desiccation tolerance. Despite its ecological and medicinal significance, genomic and transcriptomic resources for the species are limited.
Rose A. Marks +21 more
wiley +1 more source
, 2018 SatDNA are organized in tandem and often distributed in heterochromatic regions, corresponding mainly to centromeres. Evolution for satDNAs is directed by "concerted evolution" that leads to sequence homogenization, frequently generating species-specific
Bardella, Vanessa Bellini +2 more
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Evolution of Hybrid Inviability Associated With Chromosome Fusions
Molecular Ecology, Volume 34, Issue 24, December 2025.ABSTRACT Chromosomal rearrangements, such as inversions, have received considerable attention in the speciation literature due to their hampering effects on recombination. Less is known about how other rearrangements, such as chromosome fissions and fusions, can affect the evolution of reproductive isolation. Here, we use crosses between populations of
Jesper Boman +4 more
wiley +1 more source
Functional consequences of chromosome holocentricity
, 2016 Holozentrische Chromosomen treten in einer Reihe von unabhängigen Abstammungen in unterschiedlichen Eukaryoten auf. Diese bilden Zentromere entlang der Gesamtlänge der Schwesterchromatiden. Durch diese Chromosomenstruktur können Arten mit holozentrischen Chromosomen während der Meiose den für monozentrische Chromosomen-typischen Vorgang des Zwei ...
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