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प्रश्न
Retroviruses have no DNA. However, the DNA of the infected host cell does possess viral DNA. How is it possible?
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उत्तर
Retroviruses have RNA as genetic material. After the entry of a virus into the body of the host, the virus attacks the macrophage cells of the body where the RNA genome of the virus replicates to form viral DNA with the help of the reverse transcriptase enzyme.
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संबंधित प्रश्न
What is gene cloning? Explain different tools used for it.
From the following which one is NOT a feature of the plasmids?
Which of the following device is required for PCR?
Which of the following DNA sequence is recognised and cut by EcoR I?
Following are the four statements regarding separation of DNA fragments using Gel electrophoresis. Identify the INCORRECT statements.
i. DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
ii. DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
iii. Smaller the size of DNA fragment, larger is the distance it travels through it.
iv. Pure DNA can be visualized directly by exposing to UV radiation.
Identify the CORRECT order of steps in Polymerase Chain Reaction (PCR).
Which of the following statements is correct with respect to cellular respiration?
What is EcoRI?
Expand YAC used in the field of Biotechnology.
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?
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Mention any two restriction sites shown in the diagram.
- Name any two selectable markers shown in the diagram.
