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Regulation of Gene Expression

Question

 Match the following genes of the Lac operon with their respective products.

Column IColumn II
(A) i gene(i) β-galactosidase
(B) z gene(ii) Permease
(C) a gene(iii) Repressor
(D) y gene(iv) Transacetylase

                                  
                                           
                                           

 

Easy
Solution

i gene code for the repressor

z gene code for β galactosidase

a gene code for transacetylase

y gene code for permease.

‘i’ gene is constitutively expressed, and it synthesizes a protein that binds to the operator. gene ‘z, y, a’ are non-constitutive genes. They are also the structural genes present in lac operon.



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