This Week in PLoS

Investigators at Ludwig-Maximilians-University show in an SNP analysis on a population of 2,196 people — including 913 Crohn's disease patients, 318 ulcerative colitis patients, and 965 healthy, unrelated controls — that "rs6887695 modulates the susceptibility and the phenotype of IBD [inflammatory bowel disease]." Writing in PLoS One this week, the authors add that the SNP's effect on inflammatory bowel disease susceptibility "is less pronounced than that of IL23R gene variant

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Technology Review reports that researchers in the US have used CRISPR to modify a number of human embryos.

By introducing genes from butterfly peas and Canterbury bells, researchers in Japan have developed a blue chrysanthemum, according to NPR.

Plant researchers plan to sequence some 10,000 samples that represent the major plant clades, ScienceInsider reports.

In Nature this week: a Danish reference genome, and more.