Using a technique called TraDIS, for transposon directed insertion-site sequencing, scientists at the Wellcome Trust Sanger Institute led work that mapped 370,000 unique transposon insertion sites to the Salmonella enterica serovar Typhi chromosome. The density and resolution -- "an average of one every 13 base pairs," they say -- has allowed them to assay genome-wide for "essential genes" and create a list of candidates.

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York University researchers find genomic evidence of inbreeding in the yellow-banded bumblebee, according to Reuters.

In its survey of US adults, the Pew Research Center finds that views on the genetic engineering of animals depend on why it's done.

The Scientist reports agricultural researchers are working on a gene-stacking tool.

In Nature this week: statistical method for overcoming case-control imbalance issues, and more.