Which kind of therapy was given in 1990 to a four-year-old girl with Adenosine Deaminase (ADA) deficiency?

(1) Gene therapy 

(2) Chemotherapy

(3) Immunotherapy

(4) Radiation therapy

The two polypeptides of human insulin are linked together by

(1) phosphodiester bonds

(2) covalent bonds

(3) disulphide bridges

(4) hydrogen bonds

Which part of the tobacco plant is infected by Meloidegyne incognitia?

1. Leaf

2. Stem

3. Root

4. Flower

In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to 

(1) Alkaline pH of the insect gut

(2) acidic pH of the insect gut

(3) action of gut microorganisms

(4) presence of conversion factors in insect gut

A single strand of nucleic acid tagged with a radioactive molecule is called

1. vector

2. selectable marker

3. plasmid

4. probe

The process of RNA interference has been used in the development of plants resistant to 

(1) fungi

(2) viruses

(3) insects

(4) nematodes

Maximum number of existing transgenic animals is of 

(1) mice

(2) cow 

(3) pig

(4) fish

Genetic engineering has been successfully used for producing

(1) transgenic mice for testing safety of polio vaccine before use in humans

(2) transgenic models for studying new treatments for certain cardiac diseases

(3) Transgenic cow-Rosie which produces high fat milk for making ghee

(4) animals like bulls for farm work as they have super power

Some of the characteristics of Bt cotton are

(1) long fibre and resistance to aphids

(2) medium yields, long fibres and resistance to beetle pests

(3) high yield and production of toxic protein crystals which kill dipteran pests

(4) high yield and resistance to bollworms

The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/an

(1) indicator of water pollution

(2) insecticide

(3) agent for production of dairy products

(4) source of industrial enzyme