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The sequence of structural genes in lac...

The sequence of structural genes in lac operon is

A

y, a, z

B

a, z, y

C

z, y, a

D

z, a, y

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The correct Answer is:
C
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Sequence of structural genes of lac 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. Identify the correct sequence of the structural genes in the lac operon.

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MOTION-MOLECULAR BASIS OF INHERITANCE-EXERCISE - 2
  1. Consider the folowing sequence on m-RNA AUGGCAGUGCCA. Assuing that gen...

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  2. A normal DNA molecule is continuously replicate in N^(15) medium than ...

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  3. KHORANA synthesized two RNAs (a) with repeat sequence of AB and (b) w...

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  4. Which of the following m-RNA is translated completely :- (A) 5' AUG ...

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  5. In a m-RNA sequence of N(2) -bases in 5' AUG GUG CUC AAA'3. What the c...

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  6. Suppose evolution on earth has occurred in such a way that there are 9...

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  7. Assume that there are 6 types of nitrogen bases available and 40 types...

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  8. In a 3.2 Kbp long piece of DNA , 820 adenine bases were found. What ...

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  9. Which statement is correct ? (a) Degeneracy of code is related to, t...

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  10. Both the strand of DNA are not copied during transcription because :-

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  11. The salient feature of DNA are - (i) It is made of two polynucleotid...

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  12. Which is incorrect for genetic code - (i) The codon is triplet (i...

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  13. Which is correct - (i) t-RNA has an anticodon loop that has bases co...

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  14. E. colicells with a mutated z gene of the lac operon cannot grow in me...

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  15. DNA fingerprinting refers to

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  16. Select the incorrect statement.

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  17. Regulation of lac operon by repressor is referred to as -

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  18. Which is incorrect

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  19. The sequence of structural genes in lac operon is

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  20. In density gradient centrifugation, the bulk DNA forms while satelite ...

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