Q. Repressible operon system is usually found in $(i)$ pathways. The pathway's end product serves as a $(ii)$ to activate the repressor, turn off enzyme synthesis and prevent overproduction of the end product of the pathway. Genes for this operon are usually switched $(iii)$ and the repressor is synthesised in an $(i v)$ form.

(i) (ii) (iii) (iv)

(a) anabolic corepressor on inactive

(b) anabolic inducer off active

(c) catabolic inducer off active

(d) catabolic corepressor on inactive

	(i)	(ii)	(iii)	(iv)
(a)	anabolic	corepressor	on	inactive
(b)	anabolic	inducer	off	active
(c)	catabolic	inducer	off	active
(d)	catabolic	corepressor	on	inactive

1234 183 Molecular Basis of Inheritance Report Error

a

50%

50%

Solution: