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Operon contains...

Operon contains

A

Operator and regulator genes

B

Operator and structural genes

C

Operator gene, regulator genes, and repressor

D

Operator gene,regulator gene, repressor and structural genes and promoter gene.

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The correct Answer is:
D
Operon contains operator gene, regulator gene, repressor, structural genes and promoter gene.
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Operon is

Operon is

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. The lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when lactose is _____ (1)and glucose is _____(2).

The lac operon consists of :

The lac operon consists of

Lac operon consists of

In Operon concept, regulator gene functions as

Lac operon will not remain active if culture medium containes :-

A2Z-MOLECULAR BASIS OF INHERITANCE-Section A: Topicwise Questions (topic 7: Regulation Of Gene Expression) The Lac Operon
  1. Recognise the figure and find out the correct matching.

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  2. The lac operon is turned on when allolactose molecules bind to

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  3. An environmental agent that triggers transcription from an operon is a...

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  4. The genes are responsible for growth and differentiation in an organis...

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  5. In operon model, regulator gene functions as

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  6. Operon contains

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  7. In Escherichia coli, the product of i gene combines with

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  8. Operon is

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  9. Escherichia coli with mutated z gene of lac operon cannot grow in medi...

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  10. Match the column and choose the correct option.

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  11. Lac operon concept was proposed by

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  12. Escherichia coli growing on medium having glucose is transferred to la...

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  13. In Lac-operon, repressor protein binds to

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  14. A gene of operon which forms the repressor protein is

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  15. Operon model of gene regulation and organisation of prokaryotes was pr...

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  16. Sequence of structural genes of lac operon is

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  17. What is correct gene expression pathway ?

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  18. Lac operon 'inducer lactose' serves as an anzyme substrate for anzyme

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  19. In lac operon model, lactose functions as

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  20. In lac operon genes a, i, y and z code for

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