MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

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

natural transformation

conjugal transfer by a self-transmissible plasmid

generalized phage transduction

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Diagnostic DNA probes have been developed for

Hepatitis B virus

Human immunodeficiency virus

All of these

Mycobacterium tuberculosis

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following plamids do not possess information for self transfer to another cell?

Conjugative plasmids

Cryptic plasmids

Non-conjugative plasmids

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Who discovered transposons (jumping genes)?

Harvey

Abelson

McClintock

Griffith

TRUE ANSWER : ?
YOUR ANSWER : ?

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

F factors

metabolic plasmid

virulence plasmid

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The chromosomal genes, possessing fertility factor is known as

HFr

R factor

F prime factor

F factor

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Transduction

Translation

Transformation

Conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

Plasmid

Insertion sequence

None of these

Transposon

TRUE ANSWER : ?
YOUR ANSWER : ?

The plasmid which makes the host more pathogenic is

F factors

Metabolic plasmid

None of these

Virulence plasmid

TRUE ANSWER : ?
YOUR ANSWER : ?

The expression of gene X (which has promoter Px) is to be monitored. A gene fusion construction for carrying this work will

allow to monitor the expression of all genes with a promoter similar in sequence to Px

have the promoter of lacZ or some other reporter gene

have Px but not the rest of the X coding region

give the same information as from a microarray

TRUE ANSWER : ?
YOUR ANSWER : ?

↑