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.
Genome Standards Consortium Evolves and Expands to Keep Pace with Rapid Advances in the Field
At its annual meeting earlier this month, the GSC discussed expanding its MIGS/MIMS standard toward a broader specification that would encompass environmental sequencing. GSC has also formed a working group called M5 that aims to improve data-sharing and interoperability in metagenomics studies.
New to GenomeWeb? Register quickly here.