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Question
Identify the mismatched pair(s) of the genes related to the lac operon and the respective proteins they code for.
Identify the mismatched pair(s) of the genes related to the lac operon and the respective proteins they code for.
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Solution
The correct options are
A LacY- β-galactosidase
C LacZ- lactose permease
The three major enzymes involved in the digestion of lactose in the human gut are β-galactosidase, β-galactoside transacetylase and lactose permease. These are produced by transcription of three structural genes of the lac operon of E.coli. Of these, the gene lacZ codes for the enzyme β-galactosidase, lacY codes for lactose permease and lacA codes for β-galactoside transacetylase.
A LacY- β-galactosidase
C LacZ- lactose permease
The three major enzymes involved in the digestion of lactose in the human gut are β-galactosidase, β-galactoside transacetylase and lactose permease. These are produced by transcription of three structural genes of the lac operon of E.coli. Of these, the gene lacZ codes for the enzyme β-galactosidase, lacY codes for lactose permease and lacA codes for β-galactoside transacetylase.
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