This Week in Nature

In this week's Nature, a Harvard University-led team reports the identification of genomic regions affecting parental care in two mouse species, as well as a role for the hormone vasopressin in one specific care behavior. The researchers focused on two closely related species of mice — the promiscuous deer mouse and the monogamous old-field mouse — and show that they each have significant heritable differences in parental behavior.

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Polygamy amplified a rare genetic disease in area near Arizona-Utah border, BBC Future reports.

Genetic ancestry testing led one woman to learn that her father and another baby boy had been switched at birth, the Washington Post reports.

Simple de-identification methods can protect information in a database from attackers, a new study suggests.

In Science this week: approach to visualize chromatin structure in nuclei, and more.