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

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

The genetically-modified (GM) brinjal in India has been developed for

1. insect-resistant

2. enhancing self life

3. enhancing mineral content

4. drought-resistance

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

An improved variety of transgenic basmati rice

(1) does not require chemical fertilizers and growth hormones

(2) gives high yield and is rich in vitamin-A

(3) is completely resistant to all insect pests and diseases of paddy

(4) gives high yield but has no characteristic aroma

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