The multi-output OR-FFL. In a multi-output C1-FFL with OR-gate logic at the Z promoters, transcription-factor X begins to be produced at a constant rate at time t=0. At time t=T, the production rate suddenly becomes equal to zero. Calculate the dynamics of the downstream genes Zi. What are the delays between genes? (use logic input functions). Assume KXZ2(K2)>KXZ1(K1) and KYZ2(K2')