Given the partial diploid for the LAC operon: I- P- O+ Z- Y-; I(S) P+ O- Z+ Y+ [The "+" symbols indicate the Wild Type and "-" symbols indicate Loss Of Function mutation].
Indicate (YES or NO) the expression of the Z and Y genes in the following order:
Gene Z in the absence of inducer, gene Z in the presence of inducer, gene Y in the absence of inducer, gene Y in the presence of inducer:
YES, NO, YES, NO
NO, YES, NO, YES
NO, NO, NO, YES
YES, YES, YES, YES