Chromosome-Scale Selective Sweeps and Genomic Diversity in C. elegans
Andersen, Gerke et al., Nature Genetics
Researchers at Princeton University and elsewhere discuss the effects of chromosome-scale selective sweeps on genomic diversity in Caenorhabditis elegans. Taking a high-throughput selective sequencing approach on a collection of 200 wild C. elegans strains, the team found that the nematode's "genome variation is dominated by a set of commonly shared haplotypes on four of its six chromosomes, each spanning many megabases." Further, the team reports on its population genetic modeling experiments, which showed that "this pattern was generated by chromosome-scale selective sweeps that have reduced variation worldwide; at least one of these sweeps probably occurred in the last few hundred years," it writes.
As FDA's 2009 H1N1 EUAs Expire, PCR Test Makers Refine Plans for Next Flu Season
Around a dozen H1N1 tests have gained EUA approval since the FDA gave its first EUA last April for CDC's PCR-based test. However, only two of these assays have received 510(k) clearance, which allows them to be used beyond the EUA.
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