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

(2) ADA is an enzyme which is deficient in a genetic disorder SCID. ADA stands for adenosine deaminase. This enzyme is crucial for the immune system to function.