This Week in Cell

In a paper published online in advance in Molecular Cell this week, researchers at the University of Zurich show that poly(ADP-ribose)-polymerase-1, or PARP1/ARTD1, "is implicated in the maintenance of silent rDNA chromatin during cell division." More specifically, the team shows that "PARP1 associates with TIP5 … via the noncoding pRNA and binds to silent rRNA genes after their replication in mid-late S phase," such that it represses rRNA transcription and plays a role in the formation of silent rDNA chromatin.

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Gene drives might run into biological resistance, the Economist reports.

Forensic experts exhumed painter Salvador Dalí's body to collect DNA for a paternity test, CBS News reports.

Yale Environment 360 writes that synthetic and conservation biologists aren't always on the same wavelength, but they are trying to reach an understanding.

In Science this week: full CRISPR locus integration complex structure, and more.