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Tinkering with Inheritance by Chaz Conklin & Frank Garcia

Tinkering with Inheritance by Chaz Conklin & Frank Garcia. The 3 basic techniques used today to create products are: S elective breeding Inbreeding Hybridization. Selective breeding is the process of breeding plants and animals for particular traits. How is selective breeding

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Tinkering with Inheritance by Chaz Conklin & Frank Garcia

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  1. Tinkering with Inheritance by Chaz Conklin & Frank Garcia The 3 basic techniques used today to create products are: Selective breeding Inbreeding Hybridization

  2. Selective breeding is the process of breeding plants and animals for particular traits. How is selective breeding implmented? • The differential reproduction of organisms with certain traits is attributed to improved survival or reproductive ability .

  3. Example of selective breeding This Chihuahua and Great Dane show the wide range of dog breed sizes created using artificial selection

  4. Example of selective breeding Cows with big udders are good for us , but are probably painful for the cow.

  5. Selective Breeding Comparison Advantages Disadvantages • Rules out weakness • Can produce fitter, stronger animals • Better quality • Decreased variety • serious moral questions • Causes protests

  6. Selective breeding photos Advantage Strength Disadvantage Moral issue

  7. Inbreeding is the reproduction from the mating of two genetically related parents. • Inbreeding results in increased homozygosity, which can increase the chances of offspring being affected by recessive traits.

  8. Example of inbreeding Can cause mutations

  9. Example of inbreeding Inbreeding makes dogs diseased and deformed

  10. Example of inbreeding Inbreeding can have drastic results

  11. Inbreeding comparison Advantages Disadvantages • Increased probability that the two copies of any given gene will be identical. • Ensure rulers are within same family bloodlines. • Increased genetic disorders • Facial abnormalities • Lower birth rates • Higher infant mortality • Slower growth rate • Smaller adult size • Compromised immune system

  12. Inbreeding photos Advantage – family ruler Disadvantage – low birth weight

  13. Hybridization is offspring resulting from the mating of two distinctly homozygous individuals • Hybrid flower example

  14. Example of hybridization • Hybrids are produced and selected because they have desirable characteristics not found in the parent individuals or populations.

  15. Hybrid example How we make hybrid peppers

  16. Hybrid example Ant and zebra?

  17. Hybridization Comparison Advantages Disadvantages • Higher yields • Larger flowers, fruit • More adapted to new conditions • Disease resistant • Producing a hybrid seed is more time consuming and expensive because the plants must be hand pollinated • May take many years to find the desirable traits • Potential desirable qualities lost • Extinction of old plants

  18. Advantage/disadvantage photos of hybridization Hybrid seeds are achieved by cross-pollination by hand Hybridization can be time consuming

  19. Cited Sources • http://en.wikipedia.org/wiki/Selective_breeding • http://en.wikipedia.org/wiki/Artificial_selection • http://wiki.answers.com/Q/What_are_the_advantages_and_disadvantages_of_selective_breeding#ixzz1kuzCbN8n • http://images.search.yahoo.com/search/images;_ylt=A0oG7uFQPSZPvW8AR5JXNyoA?p=hybrdization&fr=slv8-yie8&fr2=piv-web • http://www.ehow.com/info_10066410_advantages-plant-hybridization.html • http://urbanext.illinois.edu/hortihints/0102a.html • http://www.bbc.co.uk/ethics/animals/using/biotechnology_1.shtml

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