Results 11 to 20 of about 286 (125)

Insights Into the Karyotype and Genome Evolution of Haplogyne Spiders Indicate a Polyploid Origin of Lineage With Holokinetic Chromosomes [PDF]

Scientific Reports, 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
Martin Forman, Petr Bureš, Charles R. Haddad   +2 more
exaly   +5 more sources

Bed bug cytogenetics: karyotype, sex chromosome system, FISH mapping of 18S rDNA, and male meiosis in Cimex lectularius Linnaeus, 1758 (Heteroptera: Cimicidae)

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, Valentina Kuznetsova, B Anokhin   +2 more
doaj   +4 more sources

Detection of telomeric sequences and ribosomal RNA genes in holokinetic chromosomes of five jumping plant-lice species: First data on the superfamily Psylloidea (Hemiptera: Sternorrhyncha) [PDF]

European Journal of Entomology, 2018
Fluorescence in situ hybridization (FISH) is a technique used to determine the chromosomal position of DNA and RNA probes. The present study contributes to knowledge on jumping plant-lice genomes by using FISH with 18S rDNA and telomeric (TTAGG)n probes ...
Anna MARYAŃSKA-NADACHOWSKA, Valentina G. KUZNETSOVA, Natalia V. GOLUB, Boris A. ANOKHIN   +3 more
doaj   +2 more sources

Histone H3 Methylation and Autosomal vs. Sex Chromosome Segregation During Male Meiosis in Heteroptera

Frontiers in Ecology and Evolution, 2022
Heteropteran insects exhibit a remarkable diversity of meiotic processes, including coexistence of different chromosomes types with different behavior during the first meiotic division, non-chiasmatic segregation, and inverted meiosis.
María Ayelen Toscani, María Inés Pigozzi, Alba G. Papeschi, María José Bressa   +3 more
doaj   +1 more source

Exploring chromosome evolution in 250 million year old groups of dragonflies and damselflies (Insecta:Odonata)

Molecular Ecology, Volume 32, Issue 21, Page 5785-5797, November 2023., 2023
Abstract Using recently published chromosome‐length genome assemblies of two damselfly species, Ischnura elegans and Platycnemis pennipes, and two dragonfly species, Pantala flavescens and Tanypteryx hageni, we demonstrate that the autosomes of Odonata have undergone few fission, fusion, or inversion events, despite 250 million years of separation.
Ethan R. Tolman, Christopher D. Beatty, Jonas Bush, Manpreet K. Kohli, Paul B. Frandsen, J. Stephen Gosnell, Jessica L. Ware   +6 more
wiley   +1 more source

The meso‐octoploid Heliophila variabilis genome sheds a new light on the impact of polyploidization and diploidization on the diversity of the Cape flora

The Plant Journal, Volume 116, Issue 2, Page 446-466, October 2023., 2023
SUMMARY Although the South African Cape flora is one of the most remarkable biodiversity hotspots, its high diversity has not been associated with polyploidy. Here, we report the chromosome‐scale genome assembly of an ephemeral cruciferous species Heliophila variabilis (~334 Mb, n = 11) adapted to South African semiarid biomes. Two pairs of differently
Yile Huang, Xinyi Guo, Kang Zhang, Terezie Mandáková, Feng Cheng, Martin A. Lysak   +5 more
wiley   +1 more source

Jekyll or Hyde? The genome (and more) of Nesidiocoris tenuis, a zoophytophagous predatory bug that is both a biological control agent and a pest

Insect Molecular Biology, Volume 30, Issue 2, Page 188-209, April 2021., 2021
The annotated genome of predatory mirid Nesidiocoris tenuis presented here was generated from a single female insect using a linked‐read sequencing and assembly strategy. Potential contaminants and/or endosymbionts were identified during assembly decontamination along with putative lateral gene transfer candidates.
K. B. Ferguson, S. Visser, M. Dalíková, I. Provazníková, A. Urbaneja, M. Pérez‐Hedo, F. Marec, J. H. Werren, B. J. Zwaan, B. A. Pannebakker, E. C. Verhulst   +10 more
wiley   +1 more source

N-banding pattern of holokinetic chromosomes and its relation to chromosome structure [PDF]

Hereditas, 2008
Nokkala, S. and Nokkala, C. 1984. N-banding pattern of holokinetic chromosomes and its relation to chromosome structure. —-Hereditas 100: 61–65. Lund, Sweden. ISSN 0018–0661. Received April 20, 1983 A new method for N-banding is described, by which the N-banding pattern of holokinetic chromosomes in mitosis and meiosis was studied.
SEPPO NOKKALA, CHRISTINA NOKKALA
openaire   +1 more source

A review on intraspecific karyomorphological variations of m chromosomes in family Libellulidae (Anisoptera: Odonata)

Journal of Basic and Applied Zoology, 2022
Background Family Libellulidae is one of the largest families of suborder Anisoptera (Odonata) including 1035 species of 144 genera throughout the world.
Gurinder Kaur Walia, Hardeep Singh
doaj   +1 more source

Chromosome and nuclear DNA study on Luzula - a genus with holokinetic chromosomes

Genome, 2004
Chromosomes and nuclear DNA amount were analyzed in leaf tissues of Luzula nivea, Luzula luzuloides, and Luzula multiflora. Intra- and interspecific karyological variability was stated. Chromosome numbers in diploids ranged 2n = 8-24 in L. nivea and L. luzuloides and 2n = 12-84 in hexaploid L. multiflora.
Elzbieta, Kuta, Borut, Bohanec, Ewa, Dubas, Liliana, Vizintin, Leslaw, Przywara   +4 more
openaire   +4 more sources