In the graph shown here, the dashed line shows the level of mRNA for a certain protein, Prot5, at various positions along the anterior-posterior axis of an insect embryo. The solid line represents the level of a regulatory protein that controls translation of the Prot5 mRNA. If the regulatory protein represses translation of the Prot5 mRNA, then which graph shows the expected level of Prot5 across the embryo?
A)graph M
B)graph H
C)graph K
D)graph L
E)graph Q

Question

In the graph shown here, the dashed line shows the level of mRNA for a certain protein, Prot5, at various positions along the anterior-posterior axis of an insect embryo. The solid line represents the level of a regulatory protein that controls translation of the Prot5 mRNA.  If the regulatory protein represses translation of the Prot5 mRNA, then which graph shows the expected level of Prot5 across the embryo? 
A)graph M 
B)graph H 
C)graph K 
D)graph L 
E)graph Q

Quizplus · Accepted Answer

If the regulatory protein represses translation of the Prot5 mRNA, then the level of Prot5 mRNA will be lower than in the dashed line. In graph D, the level of Prot5 mRNA is lower compared to the dashed line across the entire anterior-posterior axis of the embryo, which indicates that this is the expected level of Prot5 mRNA when its translation is repressed.

In the Graph Shown Here, the Dashed Line Shows the Level