Discussion
Home ‣ Microbiology ‣ Microbial Recombination and Gene Transfer Comments
- Question
Which of the following genetic elements carry the genes required for integration into host chromosomes?
Options- A. Replicon
- B. Plasmids
- C. Transposons
- D. Tandons
- Correct Answer
- Transposons
- 1. Penicillin resistance in staphylococci is acquired due to
Options- A. conjugation
- B. mutation
- C. transformation
- D. transduction Discuss
- 2. Which of the following statement(s) is/are true in regards to F+ x F- mating events?
Options- A. DNA is transferred from F- to F+ cells
- B. DNA is transferred from F+ to F- cells
- C. No DNA is transferred because F- cells are unable to perform conjugation
- D. No DNA is transferred because F+ cells are unable to perform conjugation Discuss
- 3. R factors involved in plant-microbe interactions are
Options- A. plant proteins
- B. bacterial proteins
- C. essential for transfer of DNA to plant cells
- D. also called opines Discuss
- 4. The plasmids can be eliminated from a cell by the process known as
Options- A. curing
- B. breaking
- C. fixing
- D. expulsion Discuss
- 5. Recombination of virus genomes occurs
Options- A. by transduction
- B. by transription
- C. simultaneous infection of a host cell by two viruses with homologous chromosomes
- D. by transformation Discuss
- 6. Who discovered transposons (jumping genes)?
Options- A. Abelson
- B. Harvey
- C. McClintock
- D. Griffith Discuss
- 7. Diagnostic DNA probes have been developed for
Options- A. Mycobacterium tuberculosis
- B. Hepatitis B virus
- C. Human immunodeficiency virus
- D. all of the above Discuss
- 8. When composite transposons are formed
Options- A. a small deletion occurs in the transposase gene of an IS element
- B. a small deletion occurs in the transposase gene of an IS element and plasmid is integrated
- C. an IS element integrates with another IS element with the help of a plasmid
- D. two IS elements integrate into a chromosome with only a small distance separating them Discuss
- 9. What is the term used for a segment of DNA with one or more genes in the centre and the two ends carrying inverted repeat sequences of nucleotides?
Options- A. Plasmid
- B. Transposon
- C. Insertion sequence
- D. None of these Discuss
- 10. The type of recombination that commonly occurs between a pair of homologous DNA sequences is,
Options- A. mutagenic recombination
- B. site-specific recombination
- C. replicative recombination
- D. general recombination Discuss
Microbial Recombination and Gene Transfer problems
Search Results
Correct Answer: transduction
Correct Answer: DNA is transferred from F+ to F- cells
Correct Answer: plant proteins
Correct Answer: curing
Correct Answer: simultaneous infection of a host cell by two viruses with homologous chromosomes
Correct Answer: McClintock
Correct Answer: all of the above
Correct Answer: two IS elements integrate into a chromosome with only a small distance separating them
Correct Answer: Transposon
Correct Answer: general recombination
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