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What are genes present in lac operon ? M...

What are genes present in lac operon ? Mention their function.

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The genes present in lac operon and their function include the following:
(i) One inhibitor gene (i) present is between promoter site (p) and operator site (o).
(ii) Three structural genes namely lac z, y and lac a gene are present.
(iii) lac z gene codes for B galactosidase enzyme.
(iv) lac y gene codes for permease enzyme.
(v) lac a gene codes for transactylase enzyme.
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