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In the lac operon system, beta-galactosi...

In the lac operon system, beta-galactosidase is coded by

A

a-gene

B

i-gene

C

l-gene

D

z-gene

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The correct Answer is:
D
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MODERN PUBLICATION-MOLECULAR BASIS OF INHERITANCE -COMPETITION FILE OBJECTIVE TYPE QUESTIONS (Multiple Choice Questions (MCQs) :)
  1. Assertion: Synthesis of DNA takes place in the S. phase of interphase....

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  2. In genetic fingerprinting, the 'probe' refers to ….

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  3. In the lac operon system, beta-galactosidase is coded by

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  4. The process of copying genetic information from one strand of DNA to ...

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  5. Consider the statements (i) rRNA provides template for synthesis of ...

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  6. During Meselson and Stahl' experiments, heavy DNA was distinguished fr...

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  7. The process of removal of introns and joining of exons is called :

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  8. In bacteria, the formation of peptide bond during translation is effec...

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  9. Location or sites in the human DNA where single base DNA differences o...

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  10. The 3'-5' phosphodiester linkages inside a polynucleotide chain serve ...

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  11. In transcription in eukaryotes, heterogenous nuclear RNA (hnRNA)is tra...

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  12. Non-proteinaceous enzyme that acts as a catalyst for the formation of ...

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  13. In lac operon i gene codes for :

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  14. Which one of the following have dual function ? It codes for methionin...

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  15. Menthyl guanosine triphosphate is added to the 5' end of hnRNA in a pr...

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  16. A typical nucleosome contains :

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  17. In the clotting mechanism pathway , thrombin activates factors

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  18. House-keeping proteins occur in

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  19. Which of the following statement about colour blindness is correct

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  20. A mixture containing DNA fragments A,B,C and D, with molecular weights...

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