Study the figure given below and answer the following questions(1) Ide

1.	Study the figure given below and answer the following questions(1) Identify the molecule ‘X’ synthesized by V gene. How does this molecule get inactivated?(2) Identity the structural genes that codes for 3-galactosidase.(3) When does the transcription of this gene gets stopped?
Answer» (1) Molecule ‘X’ synthesized by ‘i’ gene is a repressor protein. It gets inactivated on combining with an inducer molecule. (2) Z gene. (3) Transcription of gene stops in the following conditions: When substrate lactose is not available. And when energy source i.e. glucose is available to the cells.

Study the figure given below and answer the following questions(1) Identify the molecule ‘X’ synthesized by V gene. How does this molecule get inactivated?(2) Identity the structural genes that codes for 3-galactosidase.(3) When does the transcription of this gene gets stopped?

Answer»

(1) Molecule ‘X’ synthesized by ‘i’ gene is a repressor protein. It gets inactivated on combining with an inducer molecule.
(2) Z gene.
(3) Transcription of gene stops in the following conditions:

When substrate lactose is not available.
And when energy source i.e. glucose is available to the cells.

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Study the figure given below and answer the following questions(1) Identify the molecule ‘X’ synthesized by V gene. How does this molecule get inactivated?(2) Identity the structural genes that codes for 3-galactosidase.(3) When does the transcription of this gene gets stopped?

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