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1) Undifferentiated cells adopt different fates depending on the concentration of activator protein, Act1.2) A high concentration of Act1 leads to cell fate #1; an intermediate level of Act1 leads to cell fate #2; a low level of Act1 to cell fate #3.3) Act1 can regulate the expression of three different genes A, B, and C.4) Each of the genes A, B, and C has an enhancer recognized by Act1 but a slightly different sequence that alters the affinity of Act1 for the enhancer: Act1 has a high binding affinity for the gene A's enhancer. Act1 has a low binding affinity for the gene B's enhancer. Act1 has an intermediate binding affinity for the gene C's enhancer. What is the most likely expression pattern within a cell with the cell fate #2?
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