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In PLoS Computational Biology this week, a trio of investigators at Portugal's Instituto Gulbenkian de Ciência demonstrate that genetic redundancy is lost as a result of decreased selection for robustness in predicable environments. In interrogating "the evolutionary dynamics of genetic redundancy in extremely reduced genomes," the team found "a selective drive to keep the diversity of protein families while sacrificing paralogy."

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Novavax has begun a phase III trial of its SARS-CoV-2 vaccine, according to the New York Times.

Vox reports that the Trump Administration may limit student visas for individuals from some countries to two years.

The governor of New York says the state will conduct its own review of any SARS-CoV-2 vaccine, NPR reports.

This week in Science: Neanderthal Y chromosomes replaced by Homo sapiens Y chromosomes, and more.