Chapter 2
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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

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Chapter 2

Chapter 2

Applications of Genetics


Selective breeding

Selective Breeding


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 bad

The Bad?


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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