Results 21 to 30 of about 123,490 (101)

Sorting of chromosomes by magnetic separation [PDF]

open access: yes, 1988
Chromosomes were isolated from Chinese hamster x human hybrid cell lines containing four and nine human chromosomes. Human genomic DNA was biotinylated by nick translation and used to label the human chromosomes by in situ hybridization in suspension ...
Dudin, Gertrud   +7 more
core   +1 more source

Extensive conserved synteny of genes between the karyotypes of Manduca sexta and Bombyx mori revealed by BAC-FISH mapping. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND: Genome sequencing projects have been completed for several species representing four highly diverged holometabolous insect orders, Diptera, Hymenoptera, Coleoptera, and Lepidoptera. The striking evolutionary diversity of insects argues a need
Yuji Yasukochi   +8 more
doaj   +1 more source

Telomere disruption results in non-random formation of de novo dicentric chromosomes involving acrocentric human chromosomes [PDF]

open access: yes, 2010
Copyright: © 2010 Stimpson et al.Genome rearrangement often produces chromosomes with two centromeres (dicentrics) that are inherently unstable because of bridge formation and breakage during cell division. However, mammalian dicentrics, and particularly
Sullivan, Beth A.   +35 more
core   +2 more sources

Cytogenetic characterization of periodical cicadas (Hemiptera: Cicadidae: Magicicada)

open access: yesEuropean Journal of Entomology, 2020
The periodical cicadas of the genus Magicicada Davis, 1925 inhabiting eastern United States are characterized by a long juvenile period of 17 or 13 years and periodical mass emergence of adults. In this genus, only seven species are distinguished and are
Gayane KARAGYAN   +2 more
doaj   +1 more source

Karyotyping human chromosomes by optical and X-ray ptychography methods [PDF]

open access: yes, 2014
Sorting and identifying chromosomes, a process known as karyotyping, is widely used to detect changes in chromosome shapes and gene positions. In a karyotype the chromosomes are identified by their size and therefore this process can be performed by ...
Xiong, G   +18 more
core   +1 more source

Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders

open access: yesBMC Ecology and Evolution, 2021
Background Despite progress in genomic analysis of spiders, their chromosome evolution is not satisfactorily understood. Most information on spider chromosomes concerns the most diversified clade, entelegyne araneomorphs.
Ivalú M. Ávila Herrera   +14 more
doaj   +1 more source

Meiosis and fluorescent banding in Edessa meditabunda and E. rufomarginata (Heteroptera: Pentatomidae: Edessinae)

open access: yesEuropean Journal of Entomology, 2003
Species of Pentatomidae are cytogenetically characterized by the presence of holokinetic chromosomes, a pre-reductional type of meiosis, and a great constancy not only in chromosome number (2n = 14 in 85% of the 250 species analyzed) but also in the sex ...
Pablo J. REBAGLIATI   +2 more
doaj   +1 more source

Stretching the Rules: Monocentric Chromosomes with Multiple Centromere Domains [PDF]

open access: yes, 2012
The centromere is a functional chromosome domain that is essential for faithful chromosome segregation during cell division and that can be reliably identified by the presence of the centromere-specific histone H3 variant CenH3.
Elizabeth Schroeder-Reiter   +35 more
core   +2 more sources

Agmatoploidy and symploidy: a critical review

open access: yesGenetics and Molecular Biology
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   +3 more sources

Karyotype diversity among predatory Reduviidae (Heteroptera)

open access: yesComparative Cytogenetics, 2014
Species of infraorder Cimicomorpha of Heteroptera exhibit holokinetic chromosomes with inverted meiosis for sex chromosomes and high variation in chromosome number.
Vanessa Bellini Bardella   +3 more
doaj   +1 more source

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