Multiple Choice QuestionsIn which of the following, determination of order of bases in a DNA molecule takes place
Gene probing
Gene splicing
Gene mapping
Gene sequencing
During 'gene cloning', which is called 'gene taxi' ?
Plasmid
Protozoa
Vaccine
Bacterium
A.
Plasmid
Gene taxi refers to a vector or a carrier which is used to transfer genes from one cell to another in a bacterial colony.
Plasmids are double stranded closed DNA molecule capable of self replication, which is present as extra chromosomal structures in the bacterial cells. They are commonly used as vectors to produce recombinant DNA for gene cloning.
Flavr savr variety of tomato is a
mutated form
somaclonal variety
transgenic crop
high yielding variety
Which one of the following bacteria has found extensive use in genetic engineering work in plants?
Bacillus coagulens
Agrobacterium tumefaciens
Bacillus subtilis
E. coli
Vaccines prepared by genetic engineering are safe to man because they are
least active form of virus
active form of virus
coat protein formed as antibody
All of the above
A student wants to study metaphasic behaviour of chromosomes in a living cell. The technique most suitable is :
phase contrast microscope
x-ray microscope
cell fractionation
scanning electron microscope
Which statement is incorrect ?
Plant viruses contain RNA
Animal viruses contain DNA
T4 contains double strand DNA
TMV contains double stranded RNA
Switch
