Tutorial - hand in in class, be ready to hold forth!

The circles are proteins, the rectangles are genes.   At time t=0 you add a molecule that turns on "a".   Assume that protein c binds to and turns off protein a, but that c has a short half life.

Q1: Map a graph of the levels of b and c over time

Q2: what happens (if anything) if protein b also has a short half life, but about if it has a long half life?

 

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