Cloning & Gene Therapy Notes
• Warm up: You have 12 min to complete Woolly Mammoth Cloning.
• HW check from yesterday.
Genetic Screening• Test DNA to detect genetic diseases
– determines risk of havingor passing on a geneticdisorder
– can detect genesrelated to an increasedrisk of cancer
– can detect some genesknown to cause geneticdisorders
DMD N
Gene Therapy
• Is the replacement of faulty genes• Gene therapy replaces defective or missing
genes, or adds new genes, to treat a disease.
Gene Therapy
• Has many technical difficulties– Inserting gene into correct cell– Determining effect on other genes
• Only way to cure genetic disease is to change the affected DNA
Cloning• A clone is a genetically identical copy of a gene or of an
organism.
Cloning
• Cloning occurs in nature.
– bacteria (binary fission)– some simple animals (budding, regeneration)– Identical twins
Cloning• Mammals can be cloned through a process called
nuclear transfer.– nucleus is removed from an egg cell– nucleus of a cell from the animal to be cloned is
implanted in the egg
Benefits of Cloning
• Human organ transplants• Save endangered species
Concerns of Cloning
• Low success rate• Clones less healthy than original• Ethical controversy
Jurassic park
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