Q. Is it necessary to stop the relegation of the central portion before the stiffer fragment is ligated.

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Q. What happens if chain-termination mutation is in the S gene?

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Q. Which of the following is used for blocking the phage-encoded recombination?

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Q. Which of the following is not a consequence of deletion in the b region?

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Q. If a single system is used for packaging, there are increased chances of endogenous material being packed.

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Q. The cI function can be scanned in order to check whether the recombinants are present or not. Which of the following doesn’t hold true?

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Q. What is the function of red and gam gene products?

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Q. The red and gam genes are removed in which type of phages?

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Q. Phages which are designated as spi-are __________

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Q. Choose the correct statement for RecBCD nuclease.

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Q. The essential sites for recombination are known as __________

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Q. The replication rate remains the same for all the phages irrespective of what sequence is there in the phage.

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Q. There is a limit on upper size of the DNA to be packed. Choose the correct statement with respect to phages in this context.

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Q. There are some phages which don’t preferentially transduce some special regions of the phage genome. These phages are known as __________

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Q. Choose the correct statement for the lambda ZAP vector.

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Q. The initiator is recognized by which gene?

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Q. Choose the incorrect statement for the replication process.

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Q. Which of the following doesn’t takes place after replication?

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Q. Choose the correct statement for cosmids.

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Q. Once cosmids are inside the E.coli cells, they don’t generate phage but are propagated as plasmids.

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