A : Lac operon exerts negative control only. R : operator is occupied by aporepressor during regulat

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5.Molecular Basis of Inheritance

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$A$ : Lac operon exerts negative control only.
$R$ : The operator is occupied by aporepressor during regulation

A

Assertion and Reason both are correct and also correct explanation.

B

Assertion and Reason both are correct but not explanation of assertion.

C

Assertion is correct, but Reason is incorrect.

D

Both Assertion and Reason are incorrect.

Solution

Lac openon is +ve and -ve control

Standard 12

Biology

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Select the two correct statements out of the four $(i-iv)$ given below about lac operon.

$i.$ Glucose or galactose may bind with the repressor and inactivate it.

$ii.$ In the absence of lactose, the repressor binds with the operator region.

$iii.$ The z-gene codes for permease.

$iv.$ This was elucidated by Francois Jacob and Jacque Monod.

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