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In tryptophan operon...

In tryptophan operon

A

It is the example of inducible operon

B

It is example of repressible operon

C

on ` overset("co-repressor")to` of

D

2 and 3 both are correct

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The correct Answer is:
D
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ALLEN-GENETICS & MOLECULAR BASIS OF INHERITANCE AND MUTATION-EXERCISE-I (CONCEPTUAL QUESTIONS)
  1. A gene containing multiple exons and at least one intron is termed as ...

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  2. A gene that takes part in synthesis of polypeptide is

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  3. In tryptophan operon

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  4. The end prodict of metabolic panthway may bind a repressor to make th...

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  5. Which is true for repressible operon :-

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  6. What does lac refer to in what we call the lac operon?

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  7. This is not produced by E.coli in the lactose medium :

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  8. A functional complex comprising a cluster of genes including structura...

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  9. Functioning of structural gene is controlled by:

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  10. Operon model' for gene regulation in bacteria was proposed by

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  11. The accessibility of promoter regions of bacterial DNA in many cases ...

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  12. Regulation of lac operon by repressor is called

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  13. Which is incorrect

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  14. Which is the primary step for regulation of gene expression.

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  15. The sequence of structural genes in lac operon is

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  16. The concept of sudden genetic change which breeds true in a species is...

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  17. Mutation is

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  18. An exchange of segments between the two non homologous chromosomes is ...

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  19. Which of the following can be called a mutation :-

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  20. Mutations are commonly (a) Dominant (b) Codominant (c) Recessive ...

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