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.
The replacement of a normal gene by its specifically mutated copy is
Gene cloning
Gynogenesis
Gene knockout
lnterparietal hybridisation
Gene therapy has been successful in curing Codes genetic diseases in laboratory animals through
exposure to X-ray to rectify the defective gene
replacing the defective gene with a functional gene
oral delivery of genes
use of therapeutic medicines to rectify the defective gene
In which of the following, determination of order of bases in a DNA molecule takes place
Gene probing
Gene splicing
Gene mapping
Gene sequencing
Which one of the following bacteria has found extensive use in genetic engineering work in plants?
Bacillus coagulens
Agrobacterium tumefaciens
Bacillus subtilis
E. coli
Flavr savr variety of tomato is a
mutated form
somaclonal variety
transgenic crop
high yielding variety
A natural form of genetic engineering is exhibited by
Haemophilus influenzae
E.coli
Dolly
Agrobacterium tumefaciens
Genetically improved crop varieties can be developed in laboratory by
somatic hybridisation
transgenic technology
cell suspension culture
somaclonal variation
Which one of the following statements is wrong in relation to transgenic Bt cotton plant?
Crop yield loss due to the attack by Bacillus thuringiensis bacterium is reduced
Crop yield loss due to the attack by lepidopteran insect pests is reduced
The use of chemical insecticides in the cotton field is minimised
Better quality cotton is produced
