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www.ncbi.nlm.nih.gov/pubmed/571785
Mar 12, 1979 ... The grasshopper X chromosome. II. Negative heteropycnosis, transcription activities and compartmentation during spermatogonial stages.
jcs.biologists.org/content/81/1/299.full.pdf
cells. This heterochromatin remains positively heteropycnotic, never turning to negative heteropycnosis throughout the further development of each particular ...
www.ias.ac.in/jarch/jgenet/48/311.pdf
However, White (1940) has deinonstratecl that in the Acrididae the .X—Cll1' O13lOSO1'.11B may show both 'positive' and 'negative' heteropycnosis at dilferent ...
www.sciencedirect.com/science/article/pii/0014482759900... www.sciencedirect.com/science/article/pii/0014482759900072
The positively heteropycnotic X and Y chromosomes synapse at zygotene and a sex vesicle is formed in which they become negatively heteropycnotic.
www.ias.ac.in/jarch/jgenet/40/67.pdf
positive and negative heteropycnosis at different stages in its cycle. Thus the ... The extent of negative heteropycnosis diininishes with the successive ...
www.springerlink.com/index/M70827W874255261.pdf
is negatively heteropycnotic in spermatogonial mitoses. In neo-Xu ... usually obvious negative heteropycnosis, by comparison with XR and the autosomes.
www.biology-online.org/biology-forum/about4015.html
And if heterochromatin appears less dense than euchromatin, it is called negative heteropycnosis. Image. User avatar. Enzyme: Coral Coral ...
www.jstor.org/stable/4129802
three Goniosoma species exhibited the largest chromosome pair with a negative heteropycnosis in the distal region of the shortest arm; chromosomes of G.
onlinelibrary.wiley.com/doi/10.1111/j.1601-5223.1964.tb... onlinelibrary.wiley.com/doi/10.1111/j.1601-5223.1964.tb01939.x/pdf
regions at metaphase that could be induced by cold treatment to show negative heteropycnosis, .as has been observed in the well-known cases of “nucleic acid ...
adsabs.harvard.edu/abs/1951Natur.167..775S
Negative heteropycnosis results from the fact that the intracellular conditions permit the growth of `lampbrush' fibres on the X-chromosome, whereas the ...
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