Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
ZoologyMolecular Basis of InheritanceRegulation of Gene ExpressionMedium2 minPYQ_2002
ZoologyMediumsingle choice
In E.coli, during lactose metabolism repressor binds to:NEET 2002
Options:
Answer:
B
Solution:
The repressor can bind to a short sequence of the lac gene, called operator. When repressor binds to that sequence it physically blocks access by RNA polymerase to the DNA. As a result, as long as it is bound no lac RNA can be initiated. Related Theory The regulatory gene codes for a regulatory protein. The lac repressor, encoded by the lac gene, is the regulatory protein of the lac operon.
Stream:NEETSubject:ZoologyTopic:Molecular Basis of InheritanceSubtopic:Regulation of Gene Expression
⏱ 2mℹ️ Source: PYQ_2002
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