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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. Genetic engineering . CONTINUED…. Selective Breeding.

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Presentation Transcript
Bell work
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



Selective breeding
Selective Breeding

  • Artificially selecting & breeding only organisms w/ a desired trait to produce the next generation

  • 2 types: Inbreeding & Hybridizations

    • Domesticated animals

    • Crop plants


Selective breeding1
Selective breeding

  • Decide which characteristicsyou desire

  • Choose parents that show these characteristics

  • Select the best offspring from parents to breed the next generation

  • Repeat :)


Examples
Examples!!!

Disease-resistant wheat

Dairy cows MORE MILK!

BIGGER COWS!


Inbreeding
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


Hybridization
Hybridization

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


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