MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

Composite transposon

Plasmid

Insertion element

Virus

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Which of the following genetic elements carry the genes required for integration into host chromosomes?

Replicon

Plasmids

Transposons

Tandons

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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

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

DNA is transferred from F- to F+ cells

DNA is transferred from F+ to F- cells

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Which of the following statement can describe horizontal transfer?

The transmission of genetic information from parent to offspring

The transmission of genetic information from one independent, mature organism to another

The synthesis of RNA from a DNA template

The synthesis of protein in RNA

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

natural transformation

None of these

generalized phage transduction

conjugal transfer by a self-transmissible plasmid

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The type of recombination that commonly occurs between a pair of homologous DNA sequences is,

mutagenic recombination

site-specific recombination

replicative recombination

general recombination

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Penicillin resistance in staphylococci is acquired due to

transformation

mutation

transduction

conjugation

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Which of the following transport bacterial DNA to other bacteria via bacteriophages?

Transduction

Conjugation

Translation

Transformation

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When composite transposons are formed

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

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

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The correct term for the transfer of genetic material between bacteria in direct physical contact is

replication

conjugation

transformation

transduction

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