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प्रश्न
Study the diagram given below and answer the questions that follow.
- Name the cloning vector shown above. In which organism in this cloning vector inserted?
-
Mention any two restriction sites shown in the diagram.
- Name any two selectable markers shown in the diagram.
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उत्तर
- The given cloning vector is called pBR322 and it is inserted into E. coli bacteria.
- In the image shown, the two restriction sites are Hind III and Bam H I.
- The selectable markers in the cloning vector pBR322 include ampicillin and tetracycline resistance genes.
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संबंधित प्रश्न
What are the restriction endonucleases? Give the rules of their nomenclature.
Explain the mechanism of action of restriction endonucleases that makes them suitable for genetic engineering.
Enlist and write in brief about the different biological tools required in rDNA technology.
What is plasmid?
Identify the palindromic sequence which is recognized by the EcoRI restriction enzyme.
In which of the following techniques, charged molecules (DNA, RNA and Proteins) are separated by applying the electric field?
Identify the CORRECT order of steps in Polymerase Chain Reaction (PCR).
Which of the following statements is correct with respect to cellular respiration?
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'
Which of the following statements are true about cloning vectors?
- Vectors are DNA molecules that carry a foreign DNA segment.
- The replicated DNA is introduced into the host cell.
- It possesses the origin of replication (Ori).
- Vectors may be plasmid, bacteriophage, Yeast artificial chromosomes (YACs), etc.
- Vectors do not require a selectable marker to identify and eliminate non-transformants.
Choose the correct answer from the options given below.
