Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Select the correct statements about \[lac\] operon. (1) Glucose or galactose may bind with the represser and inactivate it (2) In the absence of lactose, the represser binds with the operator region (3) The Z-gene codes for permease (4) This was elucidated by Francois Jacob and Jacques MonodA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: C
Solution :
In prokaryotes, a hypothesis was given in 1961 to explain the protein synthesis regulation. This hypothesis was given by F Jacob and J Monod and for this awarded Nobel Prize in 1965, the hypothesis was known by the name of Operon model. The operator gene is the segment of DNA, which exercise a control over transcriptions. In the absence of lactose the represser binds with the operator gene.
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