Compensated deleterious mutations in insect genomes.

Abstract excerpt

Relatively little is known about the importance of amino acid interactions in protein and phenotypic evolution. Here we examine whether mutations that are pathogenic in Drosophila melanogaster become fixed via epistasis in other Dipteran genomes. Overall divergence at pathogenic amino acid sites is reduced. However, approximately 10% of the substitutions at these sites carry the exact same pathogenic amino acid...

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