MICROBIAL RECOMBINATION AND GENE TRANSFER QUIZ

F factor plasmids play a major role in

transduction

conjugation

trasnscription

replication

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

DNA is transferred from F- to F+ cells

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Recombination of virus genomes occurs

by transription

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

by transduction

by transformation

TRUE ANSWER : ?
YOUR ANSWER : ?

In lysogeny,

a bacteriophage transfers bacterial DNA

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

a bacteriophage genome is integrated into the bacterial genome

bacteria take up double stranded DNA from the environment

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Conjugation

Transformation

Transduction

Mutation

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

give the same information as from a microarray

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

have Px but not the rest of the X coding region

have the promoter of lacZ or some other reporter gene

TRUE ANSWER : ?
YOUR ANSWER : ?

When composite transposons are formed

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

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

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 main difference between a self-transmissible and a mobilizable plasmid is that the self-transmissible plasmid

transfers antibiotic resistance genes

transfers both strands of the plasmid DNA

usually has a transposon inserted into it

carries genes encoding the mating apparatus

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

Transformation

Lysis

Conjugation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Replicon

Transposons

Tandons

Plasmids

TRUE ANSWER : ?
YOUR ANSWER : ?