MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

natural transformation

generalized phage transduction

None of these

conjugal transfer by a self-transmissible plasmid

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The term used for acquisition of naked DNA from its environment and its incorporation in their genome by a bacterium is

transduction

conjugation

lysogenic conversion

transformation

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Diagnostic DNA probes have been developed for

Hepatitis B virus

Human immunodeficiency virus

All of these

Mycobacterium tuberculosis

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What information can be generated by interrupted mating experiments?

Levels of DNA homology

DNA nucleotide sequences

Bacterial genome maps

Proteomics of the bacteria

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Which of the following statement can describe horizontal transfer?

The synthesis of protein in RNA

The synthesis of RNA from a DNA template

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

The transmission of genetic information from parent to offspring

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In lysogeny,

a bacteriophage transfers bacterial DNA

bacteria take up double stranded DNA from the environment

DNA-degrading enzymes in the extracellular medium would stop the process

a bacteriophage genome is integrated into the bacterial genome

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

Site-specific recombination

General recombination

Mutagenic recombimation

Replicative recombination

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A microarray differs from a gene fusion in that, it

is not constructed by cloning

gives direct measurement of mRNA level

All of these

carries DNA segments from many different genes

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The plasmid which makes the host more pathogenic is

Virulence plasmid

None of these

Metabolic plasmid

F factors

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Plasmid that carries genes encoding enzymes, which degrade substances such as aromatic compounds, pesticides or sugar are

metabolic plasmid

F factors

virulence plasmid

none of these

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