نتایج جستجو برای: مگس سرکه drosophila melanogaster
تعداد نتایج: 71260 فیلتر نتایج به سال:
A comparative analysis of the genomes of Drosophila melanogaster, Caenorhabditis elegans, and Saccharomyces cerevisiae-and the proteins they are predicted to encode-was undertaken in the context of cellular, developmental, and evolutionary processes. The nonredundant protein sets of flies and worms are similar in size and are only twice that of yeast, but different gene families are expanded in...
Hybrid females from Drosophila simulans females x Drosophila melanogaster males die as embryos while hybrid males from the reciprocal cross die as larvae. We have recovered a mutation in melanogaster that rescues the former hybrid females. It was located on the X chromosome at a position close to the centromere, and it was a zygotically acting gene, in contrast with mhr (maternal hybrid rescue)...
The Drosophila heat shock cognate gene 4 (hsc4), a member of the hsp70 gene family, encodes an abundant protein, hsc70, that is more similar to the constitutively expressed human protein than the Drosophila heat-inducible hsp70. Developmental expression revealed that hsc4 transcripts are enriched in cells active in endocytosis and those undergoing rapid growth and changes in shape.
We compared the sequence polymorphism of 12 genomic fragments in six geographically dispersed African populations to one European Drosophila melanogaster population. On the basis of one African and one European population half of these fragments have strongly reduced levels of variability outside of Africa. Despite this striking difference in European variation, we detected no significant diffe...
We survey DNA sequence polymorphisms at the Sod locus and four neighboring regions of Drosophila melanogaster, spanning 55,513 base pairs (bp), in 15 strains from a natural population, plus one reference laboratory strain and one strain of Drosophila simulans. Our objective is to characterize a proposed selective sweep that occurred at a locus close to Sod in D. melanogaster and to characterize...
To determine whether male- or female-biased mutation rates have affected the molecular evolution of Drosophila melanogaster and D. simulans, we calculated the male-to-female ratio of germline cell divisions ([symbol: see text]) from germline generation data and the male-to-female ratio of mutation rate ([symbol: see text]) by comparing chromosomal levels of nucleotide divergence. We found that ...
Wolbachia is a genus of intracellular symbiotic bacteria that are widely distributed in arthropods and nematodes. These maternally inherited regulate host reproductive systems various ways to facilitate their vertical transmission. Since the identification many insects, relationship between has attracted great interest. Numerous studies have indicated modifies variety biological processes host....
Estimates of susceptibility to inbreeding depression for total fitness are needed predicting the cost and use in population viability analyses, but no such valid estimates available any wild invertebrate population. I estimated number lethals equivalents recently wild-caught populations Drosophila melanogaster using published data on homozygosity versus heterozygosity each major chromosomes (th...
A 1.9-kilobase region of the period locus was sequenced in six individuals of Drosophila melanogaster and from six individuals of each of three sibling species: Drosophila simulans, Drosophila sechellia and Drosophila mauritiana. Extensive genealogical analysis of 174 polymorphic sites reveals a complex history. It appears that D. simulans, as a large population still segregating very old linea...
Data independent acquisition (DIA) has emerged as a promising mass spectrometry based approach, combining the advantages of shotgun and targeted proteomics. Here we applied a DIA approach (termed SWATH) to monitor the dynamics of the Drosophila melanogaster embryonic proteome upon heat-shock treatment. Embryos were incubated for 0.5, 1 or 3 h at 37 °C to induce heat-shock or maintained at 25 °C...
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