This Week in Science

In this week's Science, a Harvard University-led team reports a new imaging technique for examining the layout of chromatin in individual chromosomes. The approach enables direct imaging and tracing of numerous genomic regions in individual chromosomes in situ, allowing for single-molecule analyses of chromatin organization that had not previously been possible. The researchers demonstrate their technique to reveal a number of new principles of chromatin organization.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.