Which one of the following is not an example of combinatorial control of eukaryotic gene expression?

A. The HAT activity of the yeast Gcn5 protein alters chromatin structure.
B. Fos-Jun heterodimers bind DNA with higher affinity than Fos-Fos or Jun-Jun homodimers.
C. Two regulatory proteins that form homo- and heterodimers bind to three different regulatory sites.
D. Expression of the even-skipped gene product of the fruit fly is differentially controlled by the uneven distribution of four transcription factors.


A

Biology & Microbiology

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