1998) reported that maize Bs accounted for approximately 4% of the total chromosome volume and an association exists between the number of Bs and the size of heterochromatic
knobs, which can mask the contribution of Bs to total genome size.
2012), the "bimaculatus group" has shown mainly interstitial heterochromatic
blocks on the chromosomes (Domingues et al.
Control of DNA methylation and heterochromatic
silencing by histone H2B deubiquitination.
Moreover, the largest chromosome pair presented its long arm completely heterochromatic
Spectral sensitivity of the green turtle (Chelonia mydas mydas) determined by electrical responses to heterochromatic
1A, B) and 14 rye chromosomes with conspicuous DAPI (+) terminal heterochromatic
7- Ni II selectivity interacted with heterochromatic
long arm of the Xchromosome ,because Ni II binding to the histone protein, which is form octahedral or square planer with protein which are more efficient in coordinating nickel complex than high molecular weight of double strand DNA , which is cause chromosomal damage peripheral lymphocyte ,when the worker exposure to the nickel [12,14,15] , also cause mutation for the human workers lunge [14,16] .
Among their topics are the development and maturation of human germ cells and disorders of those processes in childhood, capacitation and acrosome reaction, the clinical management of men with macrocephalic sperm head syndrome, sperm-induced oocyte activation, concern and possible seminal quality decline in the world's male population, suggestions from the fruit fly on whether the heterochromatic
component of the human Y chromosome is a genetic wasteland or something more, heavy metal contamination and male reproductive health, and spermatozoa in zero-gravity.
The observed M SM [right arrow] ST transition with decreasing DNA content suggests that a loss of DNA, in the form of noncoding heterochromatic
material, could be the most likely mechanism producing the genome size variability among the different abalone species.
Summary: TEHRAN (FNA)- Researchers identified a novel protein that is highly conserved in higher eukaryotes, and showed that in human cells, this protein binds to heterochromatic
structures which are important to cell division and chromosome maintenance.
At spermatogonial late prophase the chromosomes show heterochromatic
regions of different size in the telomeric regions and, to a lesser extent, in interstitial regions (Fig.
With hindsight, we can now say that the solution was implicit in the same meiotic cells she was studying, because such heteromorphic autosomes, which are very common in grasshoppers (Nur 1961, John 1973, Bidau & Hasson 1984), usually result from heterochromatic
supernumerary segments (see below), and the position of chiasmata (distal or proximal to the segment) determines the mode of segregation of the heteromorphic bivalent during first meiosis (reductional or equational, respectively).