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

73.

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

The replacement of a normal gene by its specifically mutated copy is

• Gene cloning

• Gynogenesis

• Gene knockout

• lnterparietal hybridisation

A natural form of genetic engineering is exhibited by

• Haemophilus influenzae

• E.coli

• Dolly

• Agrobacterium tumefaciens

In 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

Flavr savr variety of tomato is a

• mutated form

• somaclonal variety

• transgenic crop

• high yielding variety

In genetic engineering, which of the following is used?

• Plasmid

• Plastid

• Mitochondria

• ER

Which one of the following bacteria has found extensive use in genetic engineering work in plants?

• Bacillus coagulens

• Agrobacterium tumefaciens

• Bacillus subtilis

• E. coli