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प्रश्न
Name the regions marked A, B and C.
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उत्तर
A - Bam HI
B - Pst I
C - Ampicillin resistance gene (ampR)
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संबंधित प्रश्न
Draw a schematic sketch of pBR 322 plasmid and label the following in it:
(a) Any two restriction sites.
(b) Ori and rop genes.
(c) An antibiotic resistant gene.
Can you think and answer how a reporter enzyme can be used to monitor the transformation of host cells by foreign DNA in addition to a selectable marker?
Why is the coding sequence of an enzyme β-galactosidase a preferred selectable marker in comparison to the ones named above?
Write the role of ‘restriction sites’ in the cloning vector pBR322.
What is ‘Ori’ ? State its importance during cloning of a vector.
Explain the importance of ‘Selectable marker’, with the help of a suitable example.
How does the β-galactosidase coding sequence act as a selectable marker? Why is it a preferred selectable marker to antibiotic resistance genes? Explain.
A clone is a ______.
Which of the following statement is not true for a clone?
Plasmids are suitable vectors for gene cloning because these ______.
A cloning vector should possess which of the following characters?
- Origin of replication (Ori)
- Ability to destroy the alien DNA
- Cloning site to link the alien DNA
- The tumour inducing plasmid Ti.
- Selectable marker.
- Low molecular weight
The CORRECT combination is
Which of the following is not a cloning vector?
Describe the role of CaCl2 in the preparation of competent cells?
The following diagram showing restriction sites in E. coli cloning vector pBR322. Find the role of ‘X’ and ‘Y’ genes:
The “Ti plasmid” of Agrobacterium tumefaciens stands for ______.
What is the primary function of a vector in recombinant DNA technology?
Which of the following describes the function of a selectable marker in a cloning vector?
In blue–white screening, what do the white colonies indicate?
Which vector derived from \(\textit{Agrobacterium tumefaciens}\) is utilized for delivering foreign genes into plants?
