This Week in Nature

In Nature this week, a team from Wageningen University reports on the identification of a gene that regulates the initiation of tuber development and plant maturity in potatoes. The plant originated in the Andes and evolved short day-dependent tuber formation as a propagation strategy. In more northern latitudes such as the US and Europe, potatoes needed to adapt to being grown in long-day conditions.

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23andMe's Anne Wojcicki ponders DNA and what it means to be human in a New York Times essay.

A new estimate places the last universal common ancestor to life on Earth as living 3.9 billion years ago, Inverse reports.

In PNAS this week: retinitis pigmentosa gene therapy, role of microbiome in growth stunting, and more.

Bloomberg reports that researchers and drug companies are modeling anti-obesity treatments after the rare genetic condition essential fructosuria.