NEW YORK (GenomeWeb) – Two independent research teams have stitched together baker's yeast chromosomes to determine the smallest number of chromosomes the fungus needs to survive. One group was able to combine the 16 usual yeast chromosomes into just one, while the other created a strain with just two chromosomes.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.