Crossing-over frequencies, crossover interference, recombination frequencies and map distances were compared in the cv-v-f region of the X chromosome of Drosophila melanogaster in females bearing either wild type 3 chromosomes (control) or having the DNA double-strand break repair deficient mus309/mus309 mutant constitution in the 3 chromosomes (experiment), and raised in three different temper...

Previous studies have shown that isolated portions of Caenorhabditis elegans chromosomes are not equally capable of meiotic exchange. These results led to the proposal that a homolog recognition region (HRR), defined as the region containing those sequences enabling homologous chromosomes to pair and recombine, is localized near one end of each chromosome. Using translocations and duplications ...

In human cells and in Saccharomyces cerevisiae, BLAP75/Rmi1 acts together with BLM/Sgs1 and TopoIIIalpha/Top3 to maintain genome stability by limiting crossover (CO) formation in favour of NCO events, probably through the dissolution of double Holliday junction intermediates (dHJ). So far, very limited data is available on the involvement of these complexes in meiotic DNA repair. In this paper,...

Effect of heat shock on certain meiotic parameters in Drosophila melanogaster was studied in the cv-v-f region of the X chromosome of females homozygous for mus309 mutation, deficient in DNA double-strand break repair, or being of wild type. The heat shock in the wild females caused that the frequencies of the single crossovers and all the map lengths decreased while the frequency of the double...

purpose: to evaluate the underlying causes of rhegmatogenous retinal detachment (rrd) in eyes operated for this reasion. methods: out of 1473 patients who underwent retinal detachment surgery, records of 369 patients were randomly selected and evaluated for the types of retinal breaks, the underlying disorders, and location of breaks. results: fifty-two percents of patients were less than 50 ye...

Interconnected power system networks are multi loop structured. Settings determination of all over current and distance relays in such networks can be in different forms and complicated. The main problem is the determination of starting points i.e. the location of starting relays in the procedure for settings, which is referred to as break points. In this paper, a new approach based on graph th...

Factors that influence choice between qualitatively different reinforcers (e.g., a food item or a break from work) are important to consider when arranging treatments for problem behavior. Previous findings indicate that children who engage in problem behavior maintained by escape from demands may choose a food item over the functional reinforcer during treatment (DeLeon, Neidert, Anders, & Rod...

Abstract In this research, a numerical investigation was carried out on the effect of obstacle presence water flow during dam-break in dry bed. The validity simulations confirmed after comparing results with experimental evidence. Rectangular, trapezoidal and triangle obstacles were simulated numerically to explain flow. Water surface tracking turbulent modeled using Volume Fluid (VOF) method s...