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In regulation of gene expression in prok...

In regulation of gene expression in prokaryotes
I. Lactose acts as the suppressor for gene expression
II. Tryptophan acts as the inducer for gene expression
III. Regulator gene is the one that produces the repressor molecule

A

I alone correct b

B

II alone correct

C

III alone correct

D

II and I arc correct

Text Solution

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The correct Answer is:
C
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NEW JOYTHI PUBLICATION-MOLECULAR BASIS OF INHERITANCE-PREVIOUS YEAR COMPETITIVE EXAM QUESTIONS
  1. Which of the following group of codons code for amino acid serine?

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  2. Choose the wrong statement in the process of protein synthesis.

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  3. In regulation of gene expression in prokaryotes I. Lactose acts ...

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  4. Which of the following is not relevant to the structure of double heli...

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  5. The length of the haploid content of human DNA is

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  6. Meselson and Stahl experiment proved

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  7. The basis of DNA fingerprinting is

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  8. Select the correct bases of DNA, RNA and amino acid of beta chain resu...

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  9. When a segment of a chromosome breaks and later rejoins after 180^@ r...

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  10. What would be the correct base sequence in mRNA for the given DNA stra...

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  11. In DNA of certain organisms, guanine constitutes 20% of the bases. Wha...

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  12. The process of transformation was discovered by

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  13. Which of the following codons has no tRNA?

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  14. Which one of the following nitrogenous base is seen only in RNA?

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  15. Ti plasmids used in genetic engineering is obtained from

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  16. The enzyme used to join the DNA fragments is

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  17. Which of these is used as vector in gene therapy for SCID?

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  18. Name the longest gene.

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  19. In the Lac Operon system, beta-galactosidase is coded by

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  20. Match the codons with their respective amino acids and choose the corr...

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