Question
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Which enzyme will be produced in a cell if there is a nonsense mutation in the lac Y gene?
Text solutionVerified
A non-sense mutation is the one which stops polypeptide synthesis due to the formation of termination or non-sense codon. In lac operon, sequence of structural genes is Z, Y and A, which respectively code for β-galactosidase, lactose permease and transacetylase. If the gene Y has non-sense mutation, gene expression will stop at it, resulting in non-expression of both gene Y and successive gene A. Thus, only β-galactosidase enzyme will be produced.
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Question Text | Which enzyme will be produced in a cell if there is a nonsense mutation in the lac Y gene? |
Updated On | Jul 11, 2023 |
Topic | Molecular Basis of Inheritance |
Subject | Biology |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 7 |
Upvotes | 732 |
Avg. Video Duration | 3 min |