(i) Inject engineered cells into patients bone marrow. |
(ii) Viral DNA earring the normal allele inserts into chromosome. |
(iii) Let retrovirus infect bone marrow cells that have removed from patient and cultured. |
(iv) Insert RNA version of normal allele into retrovirus. |
The correct sequence is: |
A) (i), (ii), (iii) and (iv)
B) (iv), (iii), (ii) and (i)
C) (i), (ii), (iv) and (iii)
D) (iv), (iii), (i) and (ii)
Correct Answer: B
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