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Chapter 2 Applications of Genetics. Selective Breeding.

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Presentation on theme: "Chapter 2 Applications of Genetics. Selective Breeding."— Presentation transcript:

1 Chapter 2 Applications of Genetics

2 Selective Breeding

3 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 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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