Q. Which of the following mutagen causes a break in the phosphodiester backbone of the nucleic acid?

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Q. Base analogs have the same hydrogen-bonding properties as the normal bases.

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Q. Acridine orange is which type of mutagen?

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Q. Photoreactivation can cause repair of DNA damaged by which of the following mutagens?

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Q. Which of the following enzyme is used to join the DNA fragments together?

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Q. What is the mutation rate for E.coli per bacterium per cell division?

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Q. The transfer of genes from one cell to another by a bacteriophage is known as __________________

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Q. Genetic recombination occurs between homologous chromosomes.

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Q. Bacterial recombination causes transformation of the recipient cell to _______________

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Q. Transfer of genes between cells that are in physical contact with one another is known as transformation.

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Q. Which of the enzymes are used to cut the recipient DNA?

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Q. The transfer of naked DNA from one cell to another is referred to as _______________

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Q. The cell in which the F factor carries along with it some chromosomal genes are known as ____________

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Q. What are bacteriocins?

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Q. The first demonstration of recombination in bacteria was achieved by _______________

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Q. Mating between species is necessary for recombination to take place.

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Q. Which type of E.coli strain was chosen to prove the experiment of conjugation?

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Q. In conjugation only small fragments of the bacterial chromosome are transferred.

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Q. What is the shape of DNA in the male cells of E.coli?

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Q. Which of the following cells of E.coli are referred to as F—?

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