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Genetic Engineering
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Selective breeding - -Allowing only those animals that might be better hunters, better retrievers to pass desired traits on to the next generation of organisms. -Most farm animals, horses, cats and plants have been produced by selective breeding. -The process of selecting a few organisms with d...

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  • August 2, 2023
  • 4
  • 2023/2024
  • Exam (elaborations)
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Genetic Engineering


Selective breeding - -Allowing only those animals that might be better hunters, better retrievers to pass
desired traits on to the next generation of organisms.

-Most farm animals, horses, cats and plants have been produced by selective breeding.

-The process of selecting a few organisms with desired traits to serve as parents of the next generation.

-The human practice of breeding animals or plants that have certain desired traits.



What is Hybridization? - -Crossing of dissimilar organisms to bring together the best of both organisms.

-Offspring is referred to as hybrid.

-Offspring produced by this selective breeding is referred to as hardier.

-When two distinctly different forms of a species mate and provide progeny capable of greater variation
than that of either parent.



Example of hybrid cross - cross the disease resistance of of one plant with the food producing capacity
of another.



Inbreeding - -Helps to ensure that the characteristics that make each breed unique will be preserved.



Inbreeding - -Characteristics of similar organsims can bring together genetic defects.

-Joints, hips, blindness, breathing problems are serious illness are all problems associated with 2
recessive alleles combining.



How can breeders Increase genetic variation? - -Inducing mutations.

-Using radiation and chemicals.

-



What is a mutation? - -Inheritable changes in DNA. Mutations occur spontaneously.

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