References in periodicals archive ?
Dialysis-related genotoxicity: sister chromatid exchanges and DNA lesions in T and B lymphocytes of uremic patients.
pole after the first meiotic division; and 4) Chromatids must separate
Protective effect of (-)-epigallocatechingallate and (+) catechin on nitrogen oxide-induced sister chromatid exchange.
For instance, the sister chromatids do not separate at the anaphase stage of mitosis in the case of mutants that fail to undergo cleavage of cohesion (Hodges et al.
In Darlington's words describing Chorthippus meiosis: 'All the chiasmata move away from the centromeres to the ends and give terminal chiasmata; and if two are formed between one pair of arms they fuse at the ends, the penultimate association of chromatids replacing the ultimate one at the terminal chiasma' (Darlington 1959).
Chromosome fragmentation: Zeljezic and Garaj-Vrhovac (2004) reported that 2,4-D caused an increase in chromatid and chromosome breaks, number of micronuclei and number of nuclear buds.
In addition, the chromosomes replicate such that each chromosome consists of two identical chromatids joined at the centromere.
As the chromosomes reach this most condensed and shortest condition, these double strands become visible as two chromatids connected by a noncondensed area called the centromere.
Polyploidy might have occurred due to complete inhibition of spindle formation resulting in the failure of separation of chromatids and confinement of chromosomes within one nucleus [18].
1] cells contained chromosomes with both sister chromatids stained uniformly dark.
This is the region where chromatids join during the phases of cell division.
By late diakinesis, the X and Y chromosomes are separated from each other, become isopycnotic and each is composed of two sister chromatids (Ueshima, 1979; Papeschi & Bressa, 2006).