Microbial Recombination and Gene Transfer – Section 1

31. R factors involved in plant-microbe interactions are

A. plant proteins
B. bacterial proteins
C. essential for the transfer of DNA to plant cells
D. also called opines

Correct Answer: A. plant proteins

32. Which of the following is used by microbial geneticists as a tool?

A. Bacteriophage
B. Plasmids
C. Transposable elements
D. All of these

Correct Answer: D. All of these

33. Which of the following type of recombination does not require homologous sequences and is utilized by mobile genetic elements that move about chromosomes?

A. Mutagenic recombination
B. Site-specific recombination
C. Replicative recombination
D. General recombination

Correct Answer: C. Replicative recombination

34. Which of the following term describes the relationship between a virus and host where no new viral particles are produced and the viral genome is replicated along with the host chromosome?

A. Lysogeny
B. Lysis
C. Transformation
D. Conjugation

Correct Answer: A. Lysogeny

35. Inverted repeat sequences at each end and a gene encoding transposase is contained in which of the following transposable element?

A. Composite transposon
B. Insertion element
C. Virus
D. Plasmid

Correct Answer: B. Insertion element

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