assignment A researcher has discovered a regulon coordinating the expression of

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A researcher has discovered a regulon coordinating the expression of 17 genes in the bacterium Regularium Experimentalis. The researcher also finds a repressor protein that binds to a regulatory site located upstream for each of the 17 genes in the new regulon. The researcher is now investigating what happens to the expression of the 17 genes when the repressor protein is inactivated. She finds that the expression of four of the 17 genes increases while the other 13 genes are not transcribed. This surprises her as all 17 genes contain strong promoters. What can be the reason why 13 genes are not expressed even if their repressor protein is inactivated?

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assignment A researcher has discovered a regulon coordinating the expression of

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