Mitochondrial genomics flies high.
A new pair of papers reports the complete coding sequences for 28 mitochondrial DNAs in Drosophila. By examining the patterns of polymorphism and divergence among functionally distinct classes of synonymous and nonsynonymous nucleotide sites, Bill Ballard provides a comprehensive whole-genome picture of how mtDNA sequence evolution can depart from the strictly neutral and nearly neutral models of molecular evolution.
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