1 / 28

Genetic Technology

Genetic Technology. Chapter 13. A. Selective Breeding- humans choose which organisms combine genes to produce offspring. Humans hope to get the best characteristics of both parents. Hybrids (mixed genes) are usually bigger and healthier.

adelio
Download Presentation

Genetic Technology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Genetic Technology Chapter 13

  2. A. Selective Breeding- humans choose which organisms combine genes to produce offspring. • Humans hope to get the best characteristics of both parents • Hybrids (mixed genes) are usually bigger and healthier. • Inbreeding can maintain pure traits but can concentrate genetic problems.

  3. B. Genetic Engineering- inserting genes from one organism into the DNA of another. • Recombinant DNA- connecting pieces of DNA from different sources (ex. Human insulin gene in bacteria) • Transgenic organism (GMO= genetically modified organisms)- organism that contains foreign DNA. ex. The bacteria that has a human gene in it. • Why?

  4. Corn smut

  5. 3. Why? • Fast-reproducing bacteria can produce medicine (insulin, growth hormone); industrial products (artificial sweeteners) or decompose oil. • Plants can be improved to be frost, pest, or disease resistant; medicines or extra nutrients can be produced in food plants. • Transgenic animals can be made disease resistant or produced for genetic research. Less costly and dangerous than traditional breeding.

  6. FDA = Food and Drug Administration …an agency of the United States Department of Health and Human Services, one of the United States federal executive departments. The FDA is responsible for protecting and promoting public health through the regulation and supervision of food safety, tobacc products, dietary supplements, prescription and over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices (ERED), and veterinary products. http://en.wikipedia.org/wiki/Food_and_Drug_Administration

  7. GMO = Genetically Modified Organisms

  8. 4. How? • Restriction enzymes are used to cut out the desired gene. They are designed to cut a specific DNA sequence. Blunt ends and sticky ends are produced.

  9. Gel electrophoresis- pieces of DNA are separated by size. Electricity pulls them through the gel; smaller pieces move faster and farther.

  10. Host DNA is also cut with the same restriction enzyme. • Gene splicing occurs when DNA fragments are joined together. • A marker is added so you can tell the difference between regular and recombinant organisms.

More Related