Home
Class 12
BIOLOGY
A unit lac-operon which in the absence o...

A unit lac-operon which in the absence of lactose, suppresses the activity of operator gene is

A

Structural gene

B

Regulatory gene

C

Repressor protein

D

Promoter gene

Text Solution

Verified by Experts

The correct Answer is:
B
A unit lac-operon which in the absence of lactose suppresses the activity of operator gene is regulatory gene.
Promotional Banner

Topper's Solved these Questions

  • MOLECULAR BASIS OF INHERITANCE

    A2Z|Exercise Section C PREVIOUS YEARS' EXAMINATION QUESTIONS (AIIMS Question)|24 Videos

  • MOCK TEST 3

    A2Z|Exercise EXERCISE|90 Videos

  • ORGANISMS AND POPULATIONS

    A2Z|Exercise Section D: Chapter-end Test|50 Videos

Similar Questions

Explore conceptually related problems

The phenomenon, in which an alleles of one gene suppresses the activity of an allele of another gene, is known as

According to the lac operon concept, which functional unit of the bacterial genetic material is responsible for suppressing the activity of the operator gene in the absence of lactose ?

Select the two correct statements out of the four (1-4) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it 2. In the absence of lactose the repressor binds with the operator region 3. The z-gene codes for permease 4. This was elucidated Francois Jacob and Jacque Monod The correct statements are :

Read the statements regarding the lac operon and choose the correct option. 1. An inducer regulates the switching on and off of lac operon. 2. Repressor protein dissociates from operator region and prevents RNA polymerase from transcribing the operon. 3. In the presence of lactose, the repressor is activated by interaction with lactose. 4. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated.

Phenomenon of an allele of one gene suppressing the activity of alleles of another gene is called

In lac operon, lactose acts are

In lac operon i gene codes for :

When the activity of one gene is suppressed by the activity of a non-allelic gene , it is known as ?