Rapid Evolution of Yeast Centromeres in the Absence of Drive

From: Genetics | Date: April 1, 2008| Author: Bensasson, Douda; Zarowiecki, Magdalena; Burt, Austin; Koufopanou, Vassiliki | Copyright information

ABSTRACT

To find the most rapidly evolving regions in the yeast genome we compared most of chromosome III from three closely related lineages of the wild yeast Saccharomyces paradoxus. Unexpectedly, the centromere appears to be the fastest-evolving part of the chromosome, evolving even faster than DNA sequences unlikely to be under selective constraint (i.e., synonymous sites after correcting for codon usage bias and remnant transposable elements). Centromeres on other chromosomes also...

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