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

The site of production of ADA in the body is:

1. erythrocytes                               

2. lymphocytes                         

3. blood plasma                             

4. osteocytes

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