This Week in Science

In this week's Science, a team led by Johns Hopkins University researchers reports the first synthetic eukaryotic chromosome, which was developed from Saccharomyces cerevisiae. The eukaryote's genome includes 12 million nucleotides, and the scientists focused on yeast chromosome III, which contains more than 2.5 percent of those nucleotides. After using software to amend certain portions of the chromosome, the researchers built a version of it from individual nucleotides.

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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.