Regulation of Gene Expression
Question
Match the List I with List II with respect to lac operon
| List – I | List – II | ||
| A) | Product of gene y | i) | Repressor |
| B) | Product of gene z | ii) | Transporter protein |
| C) | Product of gene i | iii) | Hydrolase |
| D) | Product of gene a | iv) | Transferase |
Easy
Solution
In lac operon, gene y is expressed to form transporter protein known as permease (symporter) that actively transports lactose into a cell. Gene z is expressed to form a hydrolase known as β-galactosidase, gene a is expressed to form a transferase known as transacetylase. Gene i has information for the formation of repressor protein of lac operon that can bind to operator to prevent the transcription of structural genes of lac operon.
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