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Question
Which enzyme will produce in a cell in which there is a nonsense mutation in the lac Y-gene?
Options
Lactose Permeate
Transacetylose
Lactose permeate and transacetylase
β-galactosidase
MCQ
Solution
β-galactosidase
Explanation:
When a nonsense mutation occurs in the lac Y-gene, only two cistrons are formed, and the z cistror is translated by β-galactosidase.
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