Gene therapy is a way doctors can treat a disease by inserting a healthy gene into a patient’s cells, instead of using drugs or surgery. the new version of the gene the patient's body fight the disease. gene therapy is

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

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