Study the figure given below and answer the questions:

(i) How does the repressor molecule get inactivated?
(ii) When does the transcription of lac mRNA stop?
(iii) Name the enzyme transcribed by the gene Z'.

Explanation

(i)The repressor molecule gets inactivated after coming in contact with the inducer
(ii) The transcription of lac mRNA stops when inactivate repressor turns active, attaches itself to the operator and switches of the operation.
(iii) The enzyme synthesized by the gene Z is galactosidase.