In RNAi, genes are silenced using:

1. ss DNA     

2. ds DNA       

3. ds RNA   

4. ss RNA

The first clinical gene therapy was done for the treatment of

ADA is an enzyme which is deficient in a genetic disorder SCID. What is the full form of ADA?
1. Adenosine deoxyaminase     
2. Adenosine deaminase
3. Aspartate deaminase             
4. Arginine deaminase

Silencing of a gene could be achieved through the use of
1. RNAi only
2. antisense RNA only
3. both RNAi and antisense RNA 
4. none of the above

Golden rice is:

The trigger for activation of toxin of Bacillus thuringiensis is

1. acidic pH of stomach
2. high temperature
3. alkaline pH of gut
4. mechanical action in the insect gut

Pathophysiology is the

1. study of physiology of pathogen
2. study of normal physiology of host
3. study of altered physiology of host
4. None of the above

A protoxin is
1. a primitive toxin                         
2. a denatured toxin
3. toxin produced by Protozoa     
4. inactive toxin

The site of production of ADA in the body is:

1. erythrocytes                               

2. lymphocytes                         

3. blood plasma                             

4. osteocytes

Choose the correct option regarding Retrovirus:

1. a RNA virus that can synthesis DNA during infection
2. a DNA virus that synthesises RNA during infection
3. a ssDNA virus
4. a dsRNA virus