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Genetic Engineering CH. 13 Selective Breeding • Allowing only those with desired character istics to produce the next generation Inbreeding • Continued breeding of individuals with similar characteristics • Useful in retaining a certain set of characteristics • Can produce some serious genetic defects Genetic Engineering • DNA extraction • Remove DNA from cell • Cutting DNA – Restriction enzymes cut DNA into smaller fragments • Separating – Gel electrophoresis Using the DNA Sequence • Read the Sequence – Based on the base pairs • Cutting and Pasting – Recombinant DNA • Made by combining DNA from different sources • Making Copies Applications of Genetic Engineering • Transgenic Organisms – Contain genes from other organisms – Usually bacteria because they reproduce rapidly and are easy to grow. Cloning • A clone is a member of a population of genetically identical cells produced from a single cell.