Astyanax has also shown a wide variation in the of distribution of the constitutive heterochromatin
in the chromosomes.
regions are found at or around centromeres and telomeres using the C-banding method.
The karyotype of specimens from the central population, Iraquara (MN 68092 and MN 68094) and distribution of constitutive heterochromatin
Evidence of the differentiated structural arrangement of constitutive heterochromatin
between two populations of Astyanax scabripinnis (Pisces, Characidae).
The characterization of Ostrea denselamellosa (Mollusca, Bivalvia) chromosomes: karyotype, constitutive heterochromatin
and nucleolus organizer regions.
The cytogenetic similarities between P cariba and the species so far studied of the genus Serrasalmus, in the number and type of chromosomes, multiplicity of NOR-bearing chromosomes and the distribution of constitutive heterochromatin
located in centromeric and telomeric position, reinforces the hypothesis of the close phylogenetic relationship between the genera Pygocentrus and Serrasalmus.
was located only at telomeric regions in tetraploid B.
1991, Butlin 1998), because of the distribution of constitutive heterochromatin
linked to the sex chromosome and because of differences in gene activity linked to rDNAs, also localized within this chromosome (Gosalvez et al.
was not observed in the autosomes of G.
In that sense, the quantity and packing ratio of constitutive heterochromatin
has been mentioned by Pascoe et al.
Giemsa C-banding technique, which stains constitutive heterochromatin
, is a technique that has been used successfully in many species to identify individual chromosomes and to establish genomic relationships among species (Vosa, 1975; Cai and Chinnappa, 1987; Fominaya et al.
can be observed in the genome during the cell cycle of all types of cells as C or fluorescent bands, which occur in different parts of individual chromosomes (Shibata et al.