MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

Recombination of virus genomes occurs

by transduction

by transription

simultaneous infection of a host cell by two viruses with homologous chromosomes

by transformation

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YOUR ANSWER : ?

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

site-specific recombination

replicative recombination

general recombination

mutagenic recombination

TRUE ANSWER : ?
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What information can be generated by interrupted mating experiments?

Levels of DNA homology

Bacterial genome maps

Proteomics of the bacteria

DNA nucleotide sequences

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A microarray differs from a gene fusion in that, it

carries DNA segments from many different genes

is not constructed by cloning

All of these

gives direct measurement of mRNA level

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The plasmid-mediated properties is/are

fermentation of lactose

resistance to antibiotics

production of enterotoxin

all of these

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Which type of plasmid can exist with or without being integrated into the host's chromosome?

Medisome

Lysogen

Lisosome

Episome

TRUE ANSWER : ?
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Which of the following statement describes plasmids?

None of these

A complex membrane structure that covers the chromosome of bacteria

Another name for a protoplast

Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria

TRUE ANSWER : ?
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Which of the following is the cause for drug resistance in tuberculosis?

Transformation

Mutation

Conjugation

Transduction

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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

Replicative recombination

Mutagenic recombimation

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R factors involved in plant-microbe interactions are

bacterial proteins

essential for transfer of DNA to plant cells

also called opines

plant proteins

TRUE ANSWER : ?
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