This Week in Science

We've got microRNAs galore in today's edition of Science.

A paper from Rooij et al. at the University of Texas Southwestern Medical Center used a cardiac-specific microRNA to show that the MHC gene regulates heart growth and stress-related gene expression.

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Five researchers are to share this year's Albany Medical Center Prize for their work on the CRISPR/Cas9 gene-editing tool, the AP reports.

Stat News reports on how white supremacists cope with surprising genetic ancestry testing results.

In Genome Research this week: sex-biased gene expression evolution in malaria mosquitos, method to find ancient selective sweeps, and more.

Iceland has nearly eliminated Down syndrome from its population, CBS News reports.