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Transformation was discovered by...

Transformation was discovered by

A

Watson and crick

B

Meselson and stahl

C

Hershey and chase

D

Griffith

Text Solution

Verified by Experts

The correct Answer is:
D
In lactose operon of E. coli, the lac I gene product is the repressor which blocks the operator gene so that the structural genes are unable to form mRNAs. Thus, regulation of lac operon by repressor is referred to as negative regulation. Due to the repressor the lac operoon remains in inactive state and is thus inducible.
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