181.

Biolistic technique is used in

• tissue culture process

• gene transfer process

• hybridization process

• germplasm conservation process

Which one of the following bacterium is used for production of transgenic plants

• Escherichia coli

• Bacillus thuringiensis

• Staphylococcus aureus

• Agrobacterium tumefaciens

Basic principle of developing transgenic plants and animals is to introduce the gene of interest into the nucleus of

• somatic cell

• vegetative cell

• germ cell

• body cell

Which of the following Bt crops is being grown in India by the farmers?

• Maize

• Cotton

• Brinjal

• Soyabean

Insect pest resistant Bt cotton plant was developed using

• somaclonal variation

• micropropagation

• somatic hybridisation

• Transgenic technology

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

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