Discovery of RE

Q.

Protein coat consists of approximately how many capsomeres?

Q. Nobel prize for 1978 for restriction endonuclease technology was given to

1. Temin & Baltimore
2. Milstein & Kohler
3. Arber, Nathans & Smith
4. Holley, Khorana & Nirenberg

Q. In lysogenic cycle the bacteriophage DNA

1. all of the above
2. incorporates into the bacterial genome
3. remains non functional in the cytoplasm
4. enters the bacterium with the protein coat

Q. Restriction endonucleases are

1. Present in mammalian cells for degradation of DNA when the cell dies
2. Used in genetic engineering for ligating two DNA molecules
3. Used for in vitro DNA synthesis
4. Synthesized by bacteria as part of their defence mechanism