Genetical evidence for diploidy in Phytophthora

evidence of adverse selection in irans health insurance market

در این تحقیق به مطالعه وجود انتخاب نامساعد(کژ گزینی) در بازار بیمه درمان تکمیلی ایران پرداخته شده است. داده های مورد نیاز توسط پرسشنامه و به روش نمونه گیری خوشه ای جمع آوری شده است. پرسشنامه ها در میان افراد شاغل ساکن شهر تهران توریع شد. در این تحقیق با استفاده از تخمین دو مدل لجستیک و به دست آوردن ضریب همبستگی میان تقاضای بیمه درمان تکمیلی و رخداد خسارت به بررسی موضوع مورد نظر پرداخته شده است....

When Hymenopteran Males Reinvented Diploidy

In most plants and animals, a consistent relationship exists between the DNA content of a cell and its metabolic activity. The male-haploid sex determination of Hymenoptera and other arthropods may therefore impose a particular selective pressure upon males, which must evolve adaptations to cope with a genomic DNA reduced by half compared with that of females. Here, we show that a nuclear DNA c...

Diploidy and Dominance in Artificial Genetic Search

Genet ic algor ithms (GAs) continue to receive increased attention as general-p ur pos e met hods for search and optimization . GAs are attrac t ive for search in complex spaces where the fun ction al relati onsh ips between paramet ers and ob jective function values are of unknown , arb itrary mat hemati cal charac te r. Desp ite t heir generally robust character, typical GAs are known to fare...

PCR-based assay for mating type and diploidy in Chlamydomonas.

Genomic Convergence toward Diploidy in Saccharomyces cerevisiae

Genome size, a fundamental aspect of any organism, is subject to a variety of mutational and selection pressures. We investigated genome size evolution in haploid, diploid, and tetraploid initially isogenic lines of the yeast Saccharomyces cerevisiae. Over the course of approximately 1,800 generations of mitotic division, we observed convergence toward diploid DNA content in all replicate lines...