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In prokaryotes, the predominant site (or...

In prokaryotes, the predominant site (or primary step) of control of gene expression is at

A

Control of rate of transcriptional initiation.

B

Control of rate of translation initiation.

C

Control of rate of initiation of replication

D

Processing level

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The correct Answer is:
A
In prokaryotes, control of the rate of transcriptional initiation is the predominant site for control of gene expression.
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The predominant-site for control of gene expression in prokaryotes is

Which is the promary step for regulation of gene expression.

Go though the following statements (i) Meselson & stahl used cesium chloride density gradient to distinguish heavy DNA molecules from the normal DNA molecules. (ii) In meselson & Stahl experiment the DNA that was extracted from the culture one generation after the transfer from .^(15)N to .^(14)N , was composed of equal amount of hybrid (intermediate) DNA and of light DNA. (iii) In prokaryotes, control f the rate of transcriptional initiation is the predominant site for control of gene expression. (iv) In lac operon, the repressor is synthesised only at the time when the level of metabolite is in excess. Find out the correct statements?

Assertion :- In prokaryotes, control of the rate of transcriptional initiation is the predominant site for control of gene expression. Reason : The regulatory protein can act both positively (activators) & negatively (repressors)

In prokaryotes, regulation of gene expression occurs at the

In prokaryotes, the regulation of gene expression occurs at

Assertion : The predominant site for control ofgene expression in prokaryotes is transcription initiation. Reason : The activity of RNA polymerase is regulated by accessory proteins, which affect recognition of start sites.

Which process occurs in the regulation of gene expression in prokaryotes , but does not occur in the regulation of gene expression in eukaryotes?

Gene controls

A2Z-MOLECULAR BASIS OF INHERITANCE-Section A: Topicwise Questions (topic 7: Regulation Of Gene Expression) The Lac Operon
  1. Regulation of gene expression in eukaryotes could be exerted at a. T...

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  2. In prokaryotes, the predominant site (or primary step) of control of g...

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  3. Read the statements regarding the lac operon and choose the correct op...

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  4. Which of the following events would occur in 'Lac-operon of E. coil wh...

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  5. Match the components of lac-operon of Escherichia coli ad find out the...

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  6. Recognise the figure and find out the correct matching.

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

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

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

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  10. In operon model, regulator gene functions as

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  11. Operon contains

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

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  13. Operon is

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

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  15. Match the column and choose the correct option.

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  16. Lac operon concept was proposed by

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

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  18. In Lac-operon, repressor protein binds to

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

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

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