Cloning & Gene Therapy Notes Chapter 9 Section 4 Cloning & Gene Therapy Notes

Genetic Screening Test DNA to detect genetic diseases determines risk of having or passing on a genetic disorder can detect some genes known to cause genetic disorders

Gene Therapy Gene Therapy - the replacement of faulty genes Attempts to replace defective or missing genes or add new genes to treat a disease.

Gene Therapy Still in the experimental stages Some issues: Inserting gene into correct cell/all cells Determining effect on other genes Immune system may respond causing inflammation

Cloning Entire organisms can be cloned Clone- genetically identical copy of gene or of an organism Some simple animals can essentially clone themselves by regeneration Ex. Sea Stars First cloned dog

Cloning Process In mammals- scientists swap DNA between cells Unfertilized egg taken from animal Eggs nucleus (DNA) removed Nucleus (DNA) of animal to be cloned is implanted into egg After embryo grows for a couple days it is transplanted into female Cloning brainpop

Dolly the Sheep Dolly became first cloned mammal from using an adult cell. Led to cloning of pigs, dogs and mice Clone may not look like original (many factors influence expression of gene- i.e. environment) Dolly the Sheep brainpop

Benefits of Cloning Human organ transplants Save endangered species Bring back extinct species?? Jurassic Park Clip

Concerns of Cloning Low success rate Clones less healthy than original Ethical controversy Destruction of embryos for stem cells

Draw this image underneath vocab chart. Include captions Word Def Picture Genetic Screening Gene Therapy Clone Draw this image underneath vocab chart. Include captions