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Transcript
9.6 Genetic Screening and Gene Therapy KEY CONCEPT Genetics provides a basis for new medical treatments. 9.6 Genetic Screening and Gene Therapy Genetic screening can detect genetic disorders. • Genetic screening involves the testing of DNA. – determines risk of having DMD or passing on a genetic disorder – used to detect specific genes or proteins – can detect some genes related to an increased risk of cancer – can detect some genes known to cause genetic disorders N 9.6 Genetic Screening and Gene Therapy Gene therapy is the replacement of faulty genes. • Gene therapy replaces defective or missing genes, or adds new genes, to treat a disease. 9.6 Genetic Screening and Gene Therapy • Several experimental techniques are used for gene therapy. – genetically engineered viruses used to “infect” a patient’s cells – insert gene to stimulate immune system to attack cancer cells – insert “suicide” genes into cancer cells that activate a drug 9.6 Genetic Screening and Gene Therapy • Gene therapy has many technical challenges. – inserting gene into correct cells – controlling gene expression – determining effect on other genes
