That girl suffered a deficiency of:
AArginine decarboxylase
BAdenosine deaminase
CAlcohol dehydrogenase
DAspartate transaminase
Answer & Solution
Correct answer: B. Adenosine deaminase
1. The enzyme is abbreviated ADA.
2. She had adenosine deaminase deficiency.
3. It is caused by deletion of the gene for that enzyme.
_Source: NCERT Class 12 Biology, Ch 12 'Biotechnology and its Applications'_
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