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
Bed bug cytogenetics: karyotype, sex chromosome system, FISH mapping of 18S rDNA, and male meiosis in Cimex lectularius Linnaeus, 1758 (Heteroptera: Cimicidae) [PDF]
Comparative Cytogenetics, 2010 Bugs (Insecta: Heteroptera) are frequently used as examples of unusual cytogenetic characters, and the family Cimicidae is one of most interest in this respect.
Snejana Grozeva +2 more
doaj +7 more sources
Insights into the karyotype and genome evolution of haplogyne spiders indicate a polyploid origin of lineage with holokinetic chromosomes. [PDF]
Sci Rep, 2019 AbstractSpiders are an ancient and extremely diverse animal order. They show a considerable diversity of genome sizes, karyotypes and sex chromosomes, which makes them promising models to analyse the evolution of these traits. Our study is focused on the evolution of the genome and chromosomes in haplogyne spiders with holokinetic chromosomes. Although
Král J +12 more
europepmc +6 more sources
Sex-Linked Chromosome Heterozygosity in Males of Tityus confluens (Buthidae): A Clue about the Presence of Sex Chromosomes in Scorpions. [PDF]
PLoS ONE, 2016 Scorpions of the genus Tityus show holokinetic chromosomes, achiasmatic male meiosis and an absence of heteromorphic sex chromosomes, like all Buthidae. In this work, we analysed the meiotic behaviour and chromosome rearrangements of a population of the ...
Renzo Sebastián Adilardi +2 more
doaj +4 more sources
Karyotype and meiotic behaviour of the holokinetic chromosomes of six Argentine species of Pentatomidae (Heteroptera) [PDF]
Caryologia, 2001 Abstract The Pentatomidae are one of the largest families of Heteroptera with approximately 250 species cytogenetically analyzed. They possess holokinetic chromosomes, a modal diploid number of 14 (range 6–27) and a sex chromosome determining system XY/XX.
P.J. Rebagliati +2 more
openaire +3 more sources
Cytogenetic and molecular characterization of the MBSAT1 satellite DNA in holokinetic chromosomes of the cabbage moth, Mamestra brassicae (Lepidoptera) [PDF]
Chromosome Research, 2003 Digestion of Mamestra brassicae DNA with DraI produced a prominent fragment of approximately 200 by and a ladder of electrophoretic bands with molecular weights which are a multiple of 200 bp.
F. Marec +2 more
core +5 more sources
Kinetic activity of the sex chromosomes of Mormidea paupercula (Heteroptera: Pentatomidae) [PDF]
European Journal of Entomology, 2010 In Mormidea paupercula (n = 6 + XY in males), the presence of a CMA3-bright band in the telomeric regions on both sex chromosomes allowed the analysis of the kinetic activity of the sex univalents and XY pseudobivalent at the first and second meiotic ...
Pablo Javier REBAGLIATI +1 more
doaj +3 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
Evidence for TTAGG telomere repeats and rRNA gene clusters in leafhoppers of the genus Alebra (Hemiptera: Auchenorrhyncha: Cicadellidae) [PDF]
European Journal of Entomology, 2015 The leafhopper genus Alebra Fieber, 1872 comprises a complex of morphologically similar species. The chromosome complements (karyotypes) of five Alebra species, i.e. A. albostriella, A. coryli, A. viridis, A. wahlbergi and a new, yet undescribed species,
Valentina G. KUZNETSOVA +3 more
doaj +3 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