No hybridization signals were found in the constitutive heterochromatin
and on the corresponding autosomes ACU 7, AMO 11, and NLA 16.
in Acanthobrama marmid and Cyprinion macrostomus (Osteichthyes Cyprinidae).
The karyotype of specimens from the central population, Iraquara (MN 68092 and MN 68094) and distribution of constitutive heterochromatin
was analyzed with the C-banding technique (Fig.
DNA polymorphisms in diploid Medicago sativa ssp.
, G-bands and Robertsonian rearrangements in the chromosomes of Akodon molinae (Rodentia: Cricetidae).
During the cell cycle and meiosis, autosomal heterochromatin is typically highly condensed, and the DNA is thought to be inaccessible to the enzymes involved in recombination (Stack, 1984); similarly, the compact nature of constitutive heterochromatin
may prevent penetration of the enzymes involved in the integration of mys retrotransposons.
in spermatocytes (prophase I) of all species of Maculata subcomplex.
The point is that quantitative Q-HRs variability only exists in man, though this type of constitutive heterochromatin
is present in the genome of two other higher primates: Pan troglodytes and Goriila goriila [4-6].
Conventional FISH using the DNA probe PyrAlu-2p, highlighted the pericentromeric constitutive heterochromatin
(Lopez-Fernandez 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.