Question

If a mutation occurs in the operator (O) region of the operon that changes the sequence of nucleotide on the operator, which statement(s) predict the outcome of this mutation?

Answer 1

The lac operon contains the necessary genes for the metabolism of lactose and it only activates when the presence of lactose removes the repressor protein that binds to the operator.

If the operator mutated, then the repressor protein would be unable to attach to it and the operon would express constitutively.

This means A and B are true.