This Week in Genome Biology | GenomeWeb

In Genome Biology this week, scientists at the University of Rochester studied the evolution of R1 and R2 retrotransposons across 12 Drosophila genomes. These specifically insert into the 28S rRNA genes. They found that most copies of R1 and R2 in each species were found to exhibit less than 0.2% sequence divergence, suggesting that all copies are relatively new.

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