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.
ABRF Survey: Core Labs View Data Analysis as Key Challenge for Next-Gen Sequencing
The survey, conducted on behalf of the Association for Biomolecular Resources' Genetic Variation Research Group, revealed that core labs offer a wide range of informatics services for next-generation sequencing, including long-term storage of images and processed files, IT support, and downstream analysis.
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