A DNA test has solved a long-standing mystery surrounding a possible Titanic survivor, the Telegraph reports. Years after the ocean liner sank in 1912, Helen Kramer came forward to say that she was Loraine Allison, a two-year-old traveling on the ship who was thought to have died when it sank.

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In Science this week: swapping yeast genes with human orthologs to study conservation of function, and more.

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