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Chapter 2

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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  1. Chapter 2 Applications of Genetics

  2. Selective Breeding

  3. 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.

  4. 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

  5. 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:

  6. 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.

  7. The Bad?

  8. The Ugly • http://www.responsibletechnology.org/gmo-dangers/65-health-risks/1notes

  9. 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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