What would happen if there were a mutation in the operator o

What would happen if there were a mutation in the operator of the TRP operon?

a. the TRP operon would not be able to express the genes

b. the CAP protein couldn\'t bind, therefore shutting off the genes

c. the TRP operon would continuously express the genes

Solution

Ans

C. the tryp operon continiously express the genes

The tryp reprssor is inactive only in the presence of the tryptophan it is binding with operator sequence. So in the absense of tryptophan the aporepressor is inactive and hence continious synthesis of the genes.

And if some mutation is there in the operator so in the presence of tryptophan also repressor will not bind to operator so it will lead to continious synthesis of the genes.