Results 151 to 160 of about 1,418 (178)
Genetica, 2010 In order to study the structure of holocentric chromosomes in aphids, the localization and the composition of Rhopalosiphum padi heterochromatin and rDNA genes have been evaluated at cytogenetic and molecular level.
Gian Carlo Manicardi +2 more
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Segregation of holocentric chromosomes at meiosis in the nematode,Caenorhabditis elegans
Chromosome Research, 1993The meiotic segregation of the holocentric chromosomes of Caenorhabditis elegans in both spermatogenesis and oogenesis is described. The extended kinetochore typical of the mitotic chromosome could not be differentiated on meiotic bivalents; instead microtubules appeared to project into the chromatin.
Donna G Albertson, D G Albertson
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Chromosome Research, 2017
Despite most of the cytogenetic research is focused on monocentric chromosomes, chromosomes with kinetochoric activity localized in a single centromere, several studies have been centered on holocentric chromosomes which have diffuse kinetochoric activity along the chromosomes.
JOSÉ Ignacio Márquez-Corro +2 more
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Despite most of the cytogenetic research is focused on monocentric chromosomes, chromosomes with kinetochoric activity localized in a single centromere, several studies have been centered on holocentric chromosomes which have diffuse kinetochoric activity along the chromosomes.
JOSÉ Ignacio Márquez-Corro +2 more
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Are rice chromosomes components of a holocentric chromosome ancestor?
Plant Molecular Biology, 1997Comparative genomics reveals that cereal genomes are composed of similar genomic building blocks (linkage blocks). By stacking these blocks in a unique order, it is possible to construct a single ancestral 'chromosome' which can be cleaved to give the basic structure of the 56 different chromosomes found in wheat, rice, maize, sorghum, millet and ...
G, Moore +5 more
openaire +2 more sources
Genetica, 2005 Chromatin organization in the holocentric chromosomes of the green apple aphid Aphis pomi has been investigated at a cytological level after C-banding, NOR, Giemsa, fluorochrome staining and fluorescent in situ hybridization (FISH).
Stefano Cassanelli +2 more
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The Phylogenetic Origins and Evolutionary History of Holocentric Chromosomes
Systematic Botany, 2016In eukaryotes, we can recognize two kinds of chromosomes, based on the location of the kinetochores. The majority of eukaryotes have monocentric chromosomes, in which kinetochoric activity is concentrated in a single locus. In several unrelated eukaryotic lineages, chromosomes are holocentric, having diffuse centromeric / kinetochoric activity along ...
Marcial Escudero +2 more
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Chromosomal evolution in Cryptangieae Benth. (Cyperaceae): Evidence of holocentrism and pseudomonads
Protoplasma, 2023Cryptangieae has recently been revised based on morphology and molecular phylogeny, but cytogenetic data is still scarce. We conducted this study with the aim of investigating the occurrence of holocentric chromosomes and pseudomonads, as well as understanding the mode of chromosomal evolution in the tribe.
Ana Luisa Arantes Chaves +4 more
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Sex-specific recombination landscape in a species with holocentric chromosomes
GeneticsAbstract 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 +2 more
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Holocentric chromosomes may be an apomorphy of Droseraceae
Plant Systematics and Evolution, 2018Holocentric chromosomes have evolved in various plant and animal taxa, which suggests they may confer a selective advantage in certain conditions, yet their adaptive potential has scarcely been studied. One of the reasons may reside in our insufficient knowledge of the phylogenetic distribution of holocentric chromosomes across eukaryotic phylogeny. In
Pavel Kolodin +7 more
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Caryologia, 1999 Cytogenetic investigations on the holocentric chromosomes of Myzus varians and Myzus cerasi have been carried out using silver staining and C-banding followed by chromomycin A3 (CMA3) and DAPI staining in order to improve our knowledge of these pest crop
Davide Bizzaro +2 more
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