Results 21 to 30 of about 342,458 (306)

First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776), Osmeriformes, Osmeridae

open access: yesGenetics and Molecular Biology, 2008
The capelin, Mallotus villosus (Osmeriformes, Osmeridae), is an ecological and commercial key component of the sub-arctic ichthyofauna. Here, we provide the first cytogenetic information on the species based on both conventional karyotyping and ...
Laura Ghigliotti   +5 more
doaj   +1 more source

Chromosomal Rearrangements and Origin of the Multiple XX/XY1Y2 Sex Chromosome System in Harttia Species (Siluriformes: Loricariidae)

open access: yesFrontiers in Genetics, 2022
The Neotropical genus Harttia comprises species with extensive chromosomal remodeling and distinct sex chromosome systems (SCSs). So far, three different SCSs with male heterogamety have been characterized in the group.
Geize Aparecida Deon   +12 more
doaj   +1 more source

Detection of chromosome aberrations in metaphase and interphase tumor cells by in situ hybridization using chromosome-specific library probes [PDF]

open access: yes, 1988
Chromosome aberrations in two glioma cell lines were analyzed using biotinylated DNA library probes that specifically decorate chromosomes 1, 4, 7, 18 and 22 from pter to qter.
A Al-Saadi   +38 more
core   +1 more source

The Chromosome Number of Man [PDF]

open access: yesHereditas, 1956
Desde su aparición en 1944 la Estación Experimental de Aula Dei (EEAD) contempló objetivos de investigación básicos y aplicados, adecuando sus líneas de trabajo a las necesidades de investigación de cada momento. Gracias a una acertada política de reclutamiento de talentos, desde muy temprano se consagró como uno de los centros nacionales de referencia
Tjio, Joe Hin, Levan, Albert
openaire   +2 more sources

Antagonistic effects of whole-genome duplications and dysploidy on genome sizes in the pantropical monocot family Marantaceae: Consequences in the light of a new molecular phylogeny

open access: yesCurrent Plant Biology, 2020
Changes in chromosome number and structure, as well as alterations in genome size, are important cytological characters that often reflect speciation events.
Grit Winterfeld   +4 more
doaj   +1 more source

LSD1 is essential for oocyte meiotic progression by regulating CDC25B expression in mice [PDF]

open access: yes, 2015
Mammalian oocytes are arrested at prophase I until puberty when hormonal signals induce the resumption of meiosis I and progression to meiosis II.
Chen, T   +8 more
core   +1 more source

Phylogenetic inferences of Atelinae (Platyrrhini) based on multi-directional chromosome painting in Brachyteles arachnoides, Ateles paniscus paniscus and Ateles b. marginatus [PDF]

open access: yes, 2005
We performed multi-directional chromosome painting in a comparative cytogenetic study of the three Atelinae species Brachyteles arachnoides, Ateles paniscus paniscus and Ateles belzebuth marginatus, in order to reconstruct phylogenetic relationships ...
C. Nagamachi   +17 more
core   +1 more source

General trends of chromosomal evolution in Aphidococca (Insecta, Homoptera, Aphidinea + Coccinea)

open access: yesComparative Cytogenetics, 2015
Parallel trends of chromosomal evolution in Aphidococca are discussed, based on the catalogue of chromosomal numbers and genetic systems of scale insects by Gavrilov (2007) and the new catalogue for aphids provided in the present paper.
Ilya Gavrilov-Zimin   +2 more
doaj   +1 more source

A New Chromosome Number Report in Stachys L. Species by Use of Karyological Analysis [PDF]

open access: yesJournal of Genetic Resources, 2021
The somatic chromosome numbers and karyotype features of seven populations representing three species of Stachys L. (Lamiaceae), which are naturally distributed across Iran, were described.
Akram Rajabi Mazaher   +2 more
doaj   +1 more source

Evolutionary dynamics of insertion sequences in relation to the evolutionary histories of the chromosome and symbiotic plasmid genes of Rhizobium etli populations [PDF]

open access: yes, 2010
Insertion sequences (IS) are mobile genetic elements that are distributed in many prokaryotes. In particular, in the genomes of the symbiotic nitrogen-fixing bacteria collectively known as rhizobia, IS are fairly abundant in plasmids or chromosomal ...
Bustos, Patricia   +7 more
core   +2 more sources

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