BotanyNEET 2019Gene regulation: lac operon; Human Genome Project, DNA fingerprinting

Molecular Basis of Inheritance

Match the following genes of the lac operon with their respective products:

Column I	Column II
(a) $i$ gene	(i) $β$ -galactosidase
(b) $z$ gene	(ii) Permease
(c) $a$ gene	(iii) Repressor
(d) $y$ gene	(iv) Transacetylase

A.(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
B.(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
C.(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)✓
D.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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