This Week in Nature

In a paper published online in advance in Nature this week, members of the Heliconius Genome Consortium report having sequenced the genome of the neotropical butterfly H. melpomene, which they compared "with other taxa to investigate chromosomal evolution in Lepidoptera and gene flow among multiple Heliconius species and races." Further, using genomic resequencing, the group presents evidence of "hybrid exchange of genes between three co-mimics, H.

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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.