The genetic defect-Adenosine deaminase (ADA) deficiency may be cured permanently by:

Options

(a) administering adenosine deaminase activators
(b) introducing bone marrow cells producing ADA into cells at early embryonic stages
(c) enzyme replacement therapy
(d) periodic infusion of genetically engineered lymphocytes having functional ADA cDNA

Correct Answer:

introducing bone marrow cells producing ADA into cells at early embryonic stages

Explanation:

By introducing bone marrow cells producing ADA into cells at early embryonic stages, the gentic defect adenosine deaminase (ADA) deficiency may be cured permanently. It is due to mutation.