In the graph shown here, the dashed line shows the level of mRNA for a certain protein, Prot1, at various positions along the anterior-posterior axis of an insect embryo. The solid lines portray the levels of two regulatory proteins, A and B, that control translation of the Prot1 mRNA. If both A and B repress translation of the Prot1 mRNA, then which graph BEST approximates the expected level of Prot1 across the embryo?
A) graph M
B) graph H
C) graph K
D) graph L
E) graph Q
Correct Answer:
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