This Week in Nature

In this week's Nature, two separate research groups report on the evolution and function of the Y chromosome in male mammals. In one paper, a team from the University of Lausanne and elsewhere describe the use of a novel sequencing technique to examine Y evolution across 15 mammals, showing the origins of the chromosome in placental and marsupial mammals, which emerged just before the split of these lineages around 180 million years ago.

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A fire at a Manchester hospital may have destroyed lab equipment and data, the Guardian reports.

Researchers generate a genetic database from skeletal remains from the 1845 Franklin Expedition to the Arctic, Live Science reports.

Researchers in China have begun another trial using CRISPR/Cas9 approaches in cancer patients, according to the Wall Street Journal.

In Science this week: human DNA found in sediments from archeological sites lacking bones, and more.