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प्रश्न
What is gene cloning? Explain different tools used for it.
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उत्तर
- Gene cloning is a process which involves the isolation, transfer of a specific sequence of DNA through a vector and amplification in a host organism.
- There are three types of biological tools used in rDNA technology viz. enzymes, cloning vectors (vehicle DNA) and competent host (cloning organisms) for transformation with recombinant DNA.
संबंधित प्रश्न
Retroviruses have no DNA. However, the DNA of the infected host cell does possess viral DNA. How is it possible?
Write a short note on Electrophoresis.
Identify the palindromic sequence which is recognized by the EcoRI restriction enzyme.
From the following which one is NOT a feature of the plasmids?
Which of the following is TRUE regarding EcoR I?
Identify the characters that a cloning vector should possess.
i. Origin of replication (Ori)
ii. Ability to destroy the alien DNA
ii. Cloning site to link the alien DNA
iv. The tumour inducing plasmid Ti
v. Selectable marker
vi. Low molecular weight
Identify the characterization techniques that are based on molecular weights of compounds.
Which one is a true statement regarding DNA polymerase used in PCR?
A hind of biotechnology involving manipulation of DNA is ______.
Cloning of genes, play a very significant role in genetic engineering, helping the transfer of desirable foreign genes into different hosts. The scientists, to make this process easier and effective are creating engineered vectors in such a way that they help easy linking of foreign DNA and selection of recombinants from non-recombinants. 'pBR322' is one such engineered vectors developed by scientists. A diagram of an engineered vector pBR322 is given below:
- Name the host for this cloning vector.
- Identify 'Rop' and 'Ori' in the diagram from 'U', 'V', 'W', 'X', 'Y' and 'Z'. Write their functions.
- Draw the fragments that will be formed by the action of 'Z' (marked in the diagram) on the specific site of the DNA segment given below:
5' --- GTACGAATCCTGA --- 3'
3' --- CATGCTTAGGACT --- 3'
