MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

Replicative recombination

Site-specific recombination

Mutagenic recombimation

General recombination

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement(s) is/are true in regards to F+ x F- mating events?

No DNA is transferred because F- cells are unable to perform conjugation

DNA is transferred from F- to F+ cells

No DNA is transferred because F+ cells are unable to perform conjugation

DNA is transferred from F+ to F- cells

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

Lysogeny

Lysis

Transformation

Conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

Who discovered transposons (jumping genes)?

Abelson

Griffith

Harvey

McClintock

TRUE ANSWER : ?
YOUR ANSWER : ?

What is term used for a bacterial cell that is able to take up naked DNA?

Competent

Liable

Infected

Complementary

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following type of recombination does not require homologous sequences and is important for the integration of viral genomes into bacterial chromosomes?

Mutagenic recombimation

Site-specific recombination

Replicative recombination

General recombination

TRUE ANSWER : ?
YOUR ANSWER : ?

In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by

None of these

natural transformation

conjugal transfer by a self-transmissible plasmid

generalized phage transduction

TRUE ANSWER : ?
YOUR ANSWER : ?

When composite transposons are formed

an IS element integrates with another IS element with the help of a plasmid

a small deletion occurs in the transposase gene of an IS element and plasmid is integrated

two IS elements integrate into a chromosome with only a small distance separating them

a small deletion occurs in the transposase gene of an IS element

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmids can be eliminated from a cell by the process known as

curing

expulsion

fixing

breaking

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YOUR ANSWER : ?

F factor plasmids play a major role in

transduction

trasnscription

replication

conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?