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Chapter 2. Applications of Genetics. Selective Breeding. Selective Breeding. Selective Breeding: the intentional crossing of plants or animals that have desirable traits to produce offspring that have those traits Scientists do this to produce bigger, hardier, sweeter, fruit and vegetables.

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chapter 2

Chapter 2

Applications of Genetics

selective breeding1
Selective Breeding
  • Selective Breeding: the intentional crossing of plants or animals that have desirable traits to produce offspring that have those traits
  • Scientists do this to produce bigger, hardier, sweeter, fruit and vegetables.
inbreeding
Inbreeding
  • Inbreeding: the mating of closely related individuals—can produce weaker varieties.
  • Individuals that are closely related also have closely related genes.
  • This lack of variety leads to more recessive traits being reproduced
    • Dogs/hip dysplasia
    • Humans/birth defects
genetic engineering
Genetic Engineering
  • All living things have the model for genetic code: double helix made of 4 nucleotide bases
  • Genetic engineering: when genes, or part of an organism’s DNA is transferred to another organism.
  • These engineered genes can produce amazing outcomes:
the good
The good
  • Genetically engineering has produced insulin for diabetics, bacteria that eats oil, treatments for cystic fibrosis, enzymes that dissolve blood clots, and much more.
the ugly
The Ugly
  • http://www.responsibletechnology.org/gmo-dangers/65-health-risks/1notes
genetically m odified organisms
Genetically Modified Organisms
  • Read the section about Genetically Modified Organisms
  • Take note of the advantages and disadvantages
  • Write a speech to the scientific community explaining why you think GMOs are good or bad for humans and the environment.
  • Minimum 3 paragraphs
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