Researchers from The Netherlands' Behavioral Science Institute report that people with the seven-repeat allele version of dopamine D4 receptor gene were more likely to mimic the drinking habits of others, reports LiveScience. DRD4 "has previously been associated with novelty-seeking behavior and dependence on feel-good rewards," the article adds.

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Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.