Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
ZoologyMolecular Basis of InheritanceRegulation of Gene ExpressionEasy2 minPYQ_2026
ZoologyEasysingle choice
In thelacoperon, the z gene codes for :NEET 2026 (Cancelled)
Options:
Answer:
C
Solution:
In the lac operon, the structural genes are z, y, and a.
The z gene codes for beta-galactosidase, which is primarily responsible for the hydrolysis of the disaccharide lactose into its monomeric units, galactose and glucose.
The y gene codes for permease, which increases permeability of the cell to beta-galactosides.
The a gene codes for a transacetylase.
The i gene codes for the repressor of the lac operon.
Answer: beta-galactosidase
Stream:NEETSubject:ZoologyTopic:Molecular Basis of InheritanceSubtopic:Regulation of Gene Expression
⏱ 2mℹ️ Source: PYQ_2026
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