How much expression divergence after yeast gene duplication could be explained by regulatory motif evolution?

Abstract excerpt

We used the yeast genome sequences of gene families, microarray profiles and regulatory motif data to test the current wisdom that there is a strong correlation between regulatory motif structure and gene expression profile. Our results suggest that duplicate genes tend to be co-expressed but the correlation between motif content and expression similarity is generally poor, only approximately 2-3% of expression...

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