This Week in PLoS

In PLoS One this week, a study looks at retrogene evolution in mammals. In scrutinizing patterns of retrogene distribution in eight mammalian genomes and four non-mammalian genomes, researchers found that there has been a burst of young retrogenes in mammals and that in these shared retrofamilies, 14 to 18 percent of functional retrogenes may have originated independently in multiple mammalian species.

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