23 Genetic Screening Test DNA to detect genetic diseases determines risk of having or passing on a genetic disordercan detect genes related to an increased risk of cancercan detect some genes known to cause genetic disordersDMDN
24 Gene Therapy Is the replacement of faulty genes Gene therapy replaces defective or missing genes, or adds new genes, to treat a disease.
25 Gene Therapy Has many technical difficulties Inserting gene into correct cellDetermining effect on other genesOnly way to cure genetic disease is to change the affected DNA
26 CloningA clone is a genetically identical copy of a gene or of an organism.
27 Cloning Cloning occurs in nature. bacteria (binary fission) some simple animals (budding, regeneration)Identical twins
28 CloningMammals can be cloned through a process called nuclear transfer.nucleus is removed from an egg cellnucleus of a cell from the animal to be cloned is implanted in the egg
29 Benefits of CloningHuman organ transplantsSave endangered species
30 Concerns of Cloning Low success rate Clones less healthy than original Ethical controversy