Highly efficient concerted evolution in the ribosomal DNA repeats: total rDNA repeat variation revealed by whole-genome shotgun sequence data.

Abstract excerpt

Repeat families within genomes are often maintained with similar sequences. Traditionally, this has been explained by concerted evolution, where repeats in an array evolve "in concert" with the same sequence via continual turnover of repeats by recombination. Another form of evolution, birth-and-death evolution, can also explain this pattern, although in this case selection is the critical force maintaining the...

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