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This Week in PNAS

In a paper in the Proceedings of the National Academy of Sciences this week, scientists at CNRS in Paris have used network analysis to study the structure and evolution of genetic diversity. Studying about 119,000 homologous DNA families taken from 111 cellular genomes and 165,529 phage, plasmid, and environmental virome sequences, they found that plasmids, not viruses, were "key vectors of genetic exchange between bacterial chromosomes, both recently and in the past," they say.

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Researchers representing scientists and students of Chinese descent voice their concerns about recent US policies and rhetoric.

Wired reports that researchers have shown they could reprogram a DNA-based computer.

Researchers say increased diversity in genomic studies will benefit all, PBS NewsHour reports.

In Science this week: whole-genome sequencing of single sperm cells, and more.