A) exposure to X-ray to rectify the defective gene
B) replacing the defective gene with a functional gene
C) oral delivery of genes
D) use of therapeutic medicines to rectify the defective gene
Correct Answer: B
Solution :Gene therapy is a collection of methods that allows correction of a gene defect that has been diagnosed in a child/embryo. Here. genes are inserted into a persons cells and tissues to treat a disease. Correction of a genetic defect involves delivery of a normal, (functional) gene into the individual or embryo to take over the function of and compensate for the non-functional gene.
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