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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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