This Week in PLoS

Scientists tested three theories as to why gene order within operons doesn't appear to be random when it comes to the order of enzymes needed in metabolic pathways. Studying E. coli and "employing deterministic and stochastic models of enzyme kinetics," the Hungarian researchers found that the theory of stochastic stalling -- if an operon is not often expressed, then all the proteins for this part of metabolism can be lost -- is supported.

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Researchers have sequenced the northern white rhinoceros to gauge whether it could be brought back from the edge of extinction, the New York Times reports.

Bavaria expands its forensic genetic analyses to include DNA phenotyping, raising discrimination concerns.

Tufts University researchers found a role for miRNA in transmitting stress between generations, the Economist reports.

In Science this week: gut microbiome influences liver cancer growth, spread; and more.