Background The present study offers our contribution on the topic by a retrospective analysis of the prevalence of chromosomal abnormalities in a population of Iranian infertile men attending assisted reproduction programs. MaterialsAndMethods Cytogenetic analysis was performed according to standard methods on cultured cells obtained from the patient peripheral blood. In all, 874 files belongin...

Mammalian cells must count their X chromosomes to determine whether to initiate X chromosome inactivation. A region that may be important for X chromosome counting has been identified, but the puzzle pieces still do not quite fit.

The bee diversity (Apidae) estimative ranges from 18,000 to 20,000 species worldwide. Together, they show an impressive in morphological, ecological, and behavioral traits, there is still much be understood about their taxonomy systematics. Their chromosome count variability genome biology are also astonishing. To date, around 200 have already been karyotyped, with numbers varying n = 3 28, nuc...

With white blood cell count emerging as an important risk factor for chronic inflammatory diseases, genetic associations of differential leukocyte types, specifically monocyte count, are providing novel candidate genes and pathways to further investigate. Circulating monocytes play a critical role in vascular diseases such as in the formation of atherosclerotic plaque. We performed a joint and ...

The present study reports the chromosome number and meiotic behavior including microsporogenesis of Actaea kashmiriana J. Compton its relation with pollen fertility seed set. species showed a count 2n=4x=32 chromosomal irregularities such as chromatin stickiness, cytomixis, laggard formation, bridges, micronuclei polysporads. B-chromosomes were also observed in this species. Due to these irregu...

Philadelphia (Ph) chromosome (9;22)(q34;q11) is well established in more than 90% of chronic myeloid leukemia (CML) patients, and the remaining 5-8% of CML patients show variant and complex translocations, with the involvement of third, fourth, or fifth chromosome other than 9;22. However, in very rare cases, the fourth chromosome is involved. Here, we found a novel case of four-way Ph+ chromos...

Regulation of stem cell (SC) proliferation is central to tissue homoeostasis, injury repair, and cancer development. Accumulation of replication errors in SCs is limited by either infrequent division and/or by chromosome sorting to retain preferentially the oldest 'immortal' DNA strand. The frequency of SC divisions and the chromosome-sorting phenomenon are difficult to examine accurately with ...

In this study, the mutagenic effects of different doses and exposure times oryzalin Nitrogen Protoxide (N2O) were tested for stimulating polyploid on 41 B Fercal grapevine rootstocks seedlings. Ploidy changes examined by morphological, cytological, macroscopic, microscopic methods. Leaf thickness, chlorophyll contents, stomatal sizes, chloroplast numbers seedlings stimulated with mutagens incre...

This research aimed to induce in vitro and identify polyploidy plantlets of Porang (Amorphophallus muelleri Blume) after colchicine treatment. In shoot base explants porang were cultured on MS medium containing different concentrations 30, 60, 90, 120 mg/l for four weeks while the control was without colchicine. After weeks, all treated untreated multiplied regenerated into plantlets. Flow cyto...

Abstract Endemic (range restricted or precinctive) plant species are frequently observed to exhibit polyploidy (chromosome set duplication), which can drive shifts in ecology for angiosperms, but whether endemism is generally associated with throughout the flowering plants has not been determined. We tested hypothesis that more frequent and pronounced (higher evident ploidy levels) recently evo...