Comparative FISH mapping of ribosomal DNA clusters and TTAGG telomeric sequences to holokinetic chromosomes of eight species of the insect order Psocoptera [PDF]
Comparative Cytogenetics, 2019 Repetitive DNAs are the main components of eukaryotic genome. We mapped the 18S rDNA and TTAGG telomeric probe sequences by FISH to meiotic chromosomes of eight species of the order Psocoptera considered a basal taxon of Paraneoptera: Valenzuela ...
Natalia Golub +2 more
doaj +6 more sources
C-banding, fluorescent staining and NOR location in holokinetic chromosomes of bugs of the Neotropical genus Antiteuchus (Heteroptera: Pentatomidae: Discocephalinae) [PDF]
European Journal of Entomology, 2006 Different cytogenetic techniques including C-banding, base-specific fluorochromes and silver nitrate staining were used to compare the karyotypes of three species of bugs, representatives of the Neotropical genus Antiteuchus, namely A.
Cecilia LANZONE, Maria José DE SOUZA
doaj +5 more sources
Absence of Positive Selection on CenH3 in Luzula Suggests That Holokinetic Chromosomes May Suppress Centromere Drive. [PDF]
Annals of Botany, 2016 The centromere drive theory explains diversity of eukaryotic centromeres as a consequence of the recurrent conflict between centromeric repeats and centromeric histone H3 (CenH3), in which selfish centromeres exploit meiotic asymmetry and CenH3 evolves adaptively to counterbalance deleterious consequences of driving centromeres. Accordingly, adaptively
Petr Bureš, František Zedek
exaly +5 more sources
On the Origin of Neo-Sex Chromosomes in the Neotropical Dragonflies Rhionaeschna bonariensis and R. planaltica (Aeshnidae, Odonata) [PDF]
Insects, 2022 Odonata have holokinetic chromosomes. About 95% of species have an XX/X0 sex chromosome system, with heterogametic males. There are species with neo-XX/neo-XY sex chromosomes resulting from an X chromosome/autosome fusion. The genus Rhionaeschna includes
Liliana M. Mola +4 more
doaj +2 more sources
Holocentric chromosomes. [PDF]
PLoS Genetics, 2020 Holocentric chromosomes possess multiple kinetochores along their length rather than the single centromere typical of other chromosomes [1]. They have been described for the first time in cytogenetic experiments dating from 1935 and, since this first ...
Mauro Mandrioli, Gian Carlo Manicardi
doaj +2 more sources
Agmatoploidy and symploidy: a critical review [PDF]
Genetics and Molecular Biology, 2016 Agmatoploidy is a type of chromosome rearrangement that involves the fragmentation of an entire chromosome complement, generating a diploid with double its original chromosome number.
Marcelo Guerra
doaj +4 more sources
High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata) [PDF]
Comparative Cytogenetics, 2021 The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina.
Liliana M. Mola +2 more
doaj +4 more sources
Cytogenetic markers applied to cytotaxonomy in two soybean pests: Anticarsia gemmatalis (Hübner, 1818) and Chrysodeixis includens (Walker, 1858). [PDF]
PLoS ONE, 2020 Anticarsia gemmatalis (Hübner, 1818) and Chrysodeixis includens (Walker, 1858) are species of Lepidoptera that cause great damages in the soybean plantations of Brazil.
Brenda Rafaella Da Silva Magalhães +6 more
doaj +2 more sources
Structure and Evolution of Ribosomal Genes of Insect Chromosomes [PDF]
InsectsCurrently, clusters of 45S and 5S ribosomal DNA (rDNA) have been studied in about 1000 and 100 species of the class Insecta, respectively. Although the number of insect species with known 45S rDNA clusters (also referred to as nucleolus-organizing ...
Vladimir E. Gokhman +1 more
doaj +2 more sources
Holocentric Karyotype Evolution in Rhynchospora Is Marked by Intense Numerical, Structural, and Genome Size Changes [PDF]
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
doaj +2 more sources