We describe a Bayesian method for counting recombination events in the evolutionary history of aligned viral sequences when recombination is rare. Previous recombination detection methods have focused on testing whether particular sequences are recombinant. Our method, in constrast, examines multiple recombinant sequences with the same recombinant structure and seeks to place a lower bound on t...

Effects of the rad52 mutation in Saccharomyces cerevisiae on meiotic, gamma-ray-induced, UV-induced and spontaneous mitotic recombination were studied. The rad52/rad52 diploids undergo premeiotic DNA synthesis; sporulation occurs but inviable spores are produced. Both intra and intergenic recombination during meiosis were examined in cells transferred from sporulation medium to vegetative mediu...

Photoionization and its inverse, electron–ion recombination, are key processes that influence many astrophysical plasmas (and gasses), the diagnostics we use to analyze plasmas. In this review provide a brief overview of importance photoionization recombination in astrophysics. We highlight how data needed for spectral analyses, required accuracy, varies considerably different environments. the...

Significant recombination of the majority ion species has been observed in the divertor region of Alcator C-Mod under detached conditions. This determination is made by analysis of the visible spectrum from the divertor, in particular the Balmer series line emission and the observed recombination continuum, including an apparent recombination edge at-375 nm. The analysis shows that the electron...

Centromeres are special structures of eukaryotic chromosomes that hold sister chromatid together and ensure proper chromosome segregation during cell division. Centromeres consist of repeated sequences, which have hindered the study of centromere mitotic recombination and its consequences for centromeric function. We use a chromosome orientation fluorescence in situ hybridization technique to v...