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The sequence of structural genes in lac...

The sequence of structural genes in lac operon is

A

Lac A, Lac Y, Lac Z

B

Lac A , Lac Z, Lac Y

C

Lac Y, Lac Z, Lac A

D

Lac Z , Lac Y, Lac A

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The correct Answer is:
d
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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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NCERT FINGERTIPS-MOLECULAR BASIS OF INHERITANCE-Molecular Basis Of Inheritance
  1. Regulation of gene expression occus at the level of

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  2. During expression of an operon , RNA polymerase binds to

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  3. The sequence of structural genes in lac operon is

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  4. Match column I with II column II and select the correct option from th...

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  5. The given figure shows lac operon and its functioning. Select the opt...

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  6. Which of the following cannot act as inducer ?

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  7. Inducible operon system usually accurs in (i) pathways. Nutrient mol...

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  8. Repressible operon system is usually found in (i) pathways. The pathwa...

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  9. Match column I with II column II and select the correct option from th...

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  10. Human genome consists of approximately

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  11. Estimated number of genes in human being is

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  12. Which of the following statement regarding 'human genome' is incorrect...

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  13. Select the correct option that correctly fill the blanks i-iv. I . L...

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  14. Arrange the various steps of DNA fingerprinting technique in the corre...

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  15. Match column I with II column II and select the correct option from th...

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  16. A scientist was studying an in vitro euckaryotic transcription system...

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  17. A DNA template plus primer with the structure (where =a phosphate grou...

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  18. C-value is the characteristic DNA content in a haploid cell of a given...

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  19. The DNA fingerprinting analysis analysis of four family members is sh...

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  20. An organism uses 20 amino acids while its DNA is made up of 6 types of...

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