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Exploring Selective Breeding and Genetic Engineering

Learn about the benefits and implications of genetic modification, selective breeding, and cloning in increasing diversity. Understand how these methods impact organisms and traits in agriculture and animal husbandry.

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Exploring Selective Breeding and Genetic Engineering

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  1. Bell work • Does cloning increase diversity? • Genetically modified organisms: • 1) Are always harmful • 2) Are always micro-organisms • 3) May be beneficial • 4) Arise naturally

  2. Genetic engineering CONTINUED…

  3. Selective Breeding • Artificially selecting & breeding only organisms w/ a desired trait to produce the next generation • 2 types: Inbreeding & Hybridizations • Domesticated animals • Crop plants

  4. Selective breeding • Decide which characteristicsyou desire • Choose parents that show these characteristics • Select the best offspring from parents to breed the next generation • Repeat :)

  5. Examples!!! Disease-resistant wheat Dairy cows MORE MILK! BIGGER COWS!

  6. Inbreeding • Crossing individuals who are closely related • The wanted gene will become more & more prevalent in the offspring • The recessive gene defects show up more frequently

  7. Hybridization • Choosing & breeding organisms that show strong expression for 2 different traits to produce offspring that express both traits.

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