Results 121 to 130 of about 2,455 (197)

Belostoma estevezae Ribeiro and Alecrim (Heteroptera: Belostomatidae) reveals a new karyotype complement in Belostoma Latreille from mitotic metaphases

open access: yesRevista Chilena de Entomología, 2019
Belostoma Latreille comprende 74 especies de insectos acuáticos depredadores, con 42 de ellas registradas en Brasil. Este grupo se caracteriza por presentar cromosomas holocéntricos con sistemas de determinación sexual múltiple o simple.
Cassiane F. Lopes   +5 more
doaj  

Meiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auchenorrhyncha)

open access: yesGenetics and Molecular Biology, 2010
Spittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for ...
Márcia Maria Urbanin Castanhole   +5 more
doaj  

Sex-specific recombination landscape in a species with holocentric chromosomes

open access: yesGENETICS
Abstract The rate and chromosomal positioning of meiotic recombination significantly affects the distribution of the genetic diversity in eukaryotic genomes. Many studies have revealed sex-specific recombination patterns, with male recombination typically biased toward chromosome ends, while female recombination is more evenly ...
Sebastian Chmielewski   +6 more
openaire   +1 more source

A Toolkit of Engineered Recombinational Balancers in C. elegans [PDF]

open access: yes, 2018
Dejima and colleagues report using CRISPR/Cas9 to generate a new collection of greatly improved balancer chromosomes in the standard laboratory nematode Caenorhabditis elegans, using methods previously reported by the same laboratory, expanding the set ...
Schwartz, Hillel T., Sternberg, Paul W.
core  

A catalogue of chromosome counts for Phylum Nematoda [version 1; peer review: 2 approved]

open access: yesWellcome Open Research
Nematodes are important biological models in genetics and genomics, with research driven by basic biological as well as applied questions. The presence of holocentric chromosomes, clades with frequent polyploidy and the phenomenon of programmed DNA ...
Mark L. Blaxter   +2 more
doaj   +1 more source

Characterizing the 3D organization of holocentric chromosomes in Bombyx mori

open access: yes, 2022
L'organisation du génome dans le noyau cellulaire a été observée et décrite dans différents organismes depuis plus de 140 ans. La plupart des organismes où cela a été fait sont monocentriques, c’est-à-dire dont les chromosomes n’ont qu’un seul centromère.
openaire   +1 more source

Independent evolution of holocentric chromosomes in an early branching apicomplexan parasite

open access: yes
ABSTRACT During its asexual cycle, Cryptosporidium parvum ( C. parvum ) amplifies through three rounds of nuclear division before undergoing cytokinesis to form infectious merozoites. However, chromosome organization and segregation during nuclear
Abigail Kimball   +5 more
openaire   +1 more source

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