Gene Therapy ____

Question

Gene therapy ____.  
A) has not yet been used successfully with mammals
B) is a surgical technique that replaces defective genes with normal genes
C) has been used successfully to treat victims of autosomal dominant disorders by replacing the dominant allele with a recessive allele
D) is a genetic engineering technique that replaces defective alleles with normal ones
E) is only possible in adults

Accepted Answer

Gene therapy is a genetic engineering technique that involves replacing defective alleles with normal ones. This can be done through various methods such as inserting normal genes into cells or repairing mutated genes.

Note: Option A is incorrect as gene therapy has been successfully used with mammals. Option B and C are incorrect as they do not accurately describe the process of gene therapy. Option E is incorrect as gene therapy can be done in both adults and children.