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MCQs

Total Questions : 82 | Page 4 of 9 pages
Question 31. Which of the following type of recombination does not require homologous sequences and is utilized by mobile genetic elements that move about chromosomes?
  1.    General recombination
  2.    Replicative recombination
  3.    Site-specific recombination
  4.    Mutagenic recombimation
 Discuss Question
Answer: Option B. -> Replicative recombination
Question 32. R factors involved in plant-microbe interactions are
  1.    bacterial proteins
  2.    also called opines
  3.    essential for transfer of DNA to plant cells
  4.    plant proteins
 Discuss Question
Answer: Option D. -> plant proteins
Question 33. Inverted repeat sequences at each end and a gene encoding transposase is contained in which of the following transposable element?
  1.    Plasmid
  2.    Insertion element
  3.    Composite transposon
  4.    Virus
 Discuss Question
Answer: Option B. -> Insertion element
Question 34. Which of the following is used by microbial genetisists as a tool?
  1.    Bacteriophage
  2.    Plasmids
  3.    Transposable elements
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 35. 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 host chromosome?
  1.    Lysis
  2.    Conjugation
  3.    Transformation
  4.    Lysogeny
 Discuss Question
Answer: Option D. -> Lysogeny
Question 36. F factor plasmids play a major role in
  1.    trasnscription
  2.    conjugation
  3.    transduction
  4.    replication
 Discuss Question
Answer: Option B. -> conjugation
Question 37. The chromosomal genes, possessing fertility factor is known as
  1.    HFr
  2.    F prime factor
  3.    F factor
  4.    R factor
 Discuss Question
Answer: Option B. -> F prime factor
Question 38. Which of the following genetic elements carry the genes required for integration into host chromosomes?
  1.    Tandons
  2.    Replicon
  3.    Plasmids
  4.    Transposons
 Discuss Question
Answer: Option D. -> Transposons
Question 39. Which of the following statement can describe horizontal transfer?
  1.    The synthesis of RNA from a DNA template
  2.    The synthesis of protein in RNA
  3.    The transmission of genetic information from one independent, mature organism to another
  4.    The transmission of genetic information from parent to offspring
 Discuss Question
Answer: Option C. -> The transmission of genetic information from one independent, mature organism to another
Question 40.  The plasmid-mediated properties is/are
  1.    fermentation of lactose
  2.    production of enterotoxin
  3.    resistance to antibiotics
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these

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