Only a small sliver of human DNA is functional, say researchers from the University of Oxford in PLOS Genetics. They calculate that 8.2 percent of the human genome is under negative selection and thus likely to be functional.
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In PNAS this week: ancestry and admixture in Brazilians, characterization of novel double-stranded RNA mycovirus, and more.
Researchers report that what scents someone picks up can reflect their complement of immune genes.
The New York Times examines ethics and China's push to lead biomedical research.
At her blog, Sally Rockey dives into National Institutes of Health funding data.