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Chromosoma, 1985
Comparative fluorescence studies on the chromosome of ten species of acridid grasshoppers, with varying amounts and locations of C-band positive heterochromatin, indicate that the only regions to fluoresce differentially are those that C-band. Within a given species there is a marked tendency for groups of chromosomes to accumulate heterochromatin with
B, John +3 more
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Comparative fluorescence studies on the chromosome of ten species of acridid grasshoppers, with varying amounts and locations of C-band positive heterochromatin, indicate that the only regions to fluoresce differentially are those that C-band. Within a given species there is a marked tendency for groups of chromosomes to accumulate heterochromatin with
B, John +3 more
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NOR associations with heterochromatin
Cytogenetics and Cell Genetics, 2008Associations between nucleolus organizer regions (NORs) and non-acrocentric chromosomes were scored in 2,800 metaphase spreads from PHA-stimulated lymphocyte cultures (48 h) from 14 individuals. The preparations were both silver stained and C-banded.
C M, Tuck-Muller +3 more
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Heterochromatin and chromosome aberrations
Chromosoma, 1969The chromosome breaking effect of mitomycin C, methyl methanesulfonate, maleic hydrazide, 8-ethoxycaffeine and gamma rays on the primary root meristematic cells of Nigella damascena was studied. All the agents tested except 8-ethoxycaffeine, produced relatively fewer aberrations, when compared to Vicia faba cells, though both the species have nearly ...
A T, Natarajan, G, Ahnström
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Heterochromatin, colchicine, and karyotype
Chromosoma, 1965Species of Chilocorus differ in chromosome number owing to centric fusion of metacentric chromosomes. The concomitant loss of arms is tolerated because in all unfused chromosomes one arm is completely heterochromatic, the other euchromatic. Under the influence of colchicine, the arms of unfused and fused chromosomes contract differentially.
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The Origin of Heterochromatin in Eukaryotes
Russian Journal of Genetics, 2002This study is an attempt to reconstruct the stages of the evolution of heterochromatin in eukaryotes. According to the hypothesis put forward in the work, the origin of satellite DNAs (stDNAs) was directly related to certain functional characteristics of DNA polymerases, and stDNAs themselves are products of accidental slippage at replication ...
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The paradox of functional heterochromatin.
BioEssays : news and reviews in molecular, cellular and developmental biology, 2005Although heterochromatin has been studied for 80 years, its genetic function and molecular organization have remained elusive. In almost all organisms, heterochromatin has been regarded as genetically inactive chromosome regions. However, from genetic and genomic studies in Drosophila melanogaster and other organisms including humans, it is now clear ...
DIMITRI, Patrizio +3 more
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The molecular basis of heterochromatin assembly and epigenetic inheritance
Molecular Cell, 2023Shiv I S Grewal
exaly