genetics chapter twelve: the code of life 12.1 the role of dna in heredity 12.2 dna and technology
TRANSCRIPT
![Page 1: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/1.jpg)
![Page 2: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/2.jpg)
Genetics
![Page 3: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/3.jpg)
Chapter Twelve: The Code of Life
• 12.1 The Role of DNA in Heredity
• 12.2 DNA and Technology
![Page 4: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/4.jpg)
12.2 DNA and technology• Selective breeding is
the process of selecting organisms with desired traits to serve as parents for the next generation.
• Native Americans used selective breeding to produce maize.
![Page 5: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/5.jpg)
![Page 6: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/6.jpg)
12.2 Genetic engineering• Since the discovery of
DNA, scientists have found new methods of producing organisms with desired traits.
• Genetic engineering is the process of transferring genes from one organism into the DNA of another organism.
This human gene can be placed into a bacterium!
![Page 7: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/7.jpg)
![Page 8: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/8.jpg)
12.2 DNA fingerprinting
• Human DNA is unique from person to person, but the same from cell to cell.
• A technique called DNA fingerprinting produces an image of patterns made by a person’s DNA.
• Like normal fingerprints, the patterns produced by DNA are unique to each individual person.
![Page 9: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/9.jpg)
12.2 The human genome• A genome is the total amount of hereditary
material in a single cell of an organism.
• If you think of a genome as a set of books, each chromosome is a book from the set.
• Each gene is a paragraph from the book.
• Each base is a letter from the paragraph.
![Page 10: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/10.jpg)
![Page 11: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/11.jpg)
12.2 The human genome• Mitochondrial DNA is
DNA that is found in the mitochondria of a cell.
• Since it is inherited only from the mother, mitochondrial DNA allows scientists to trace human origins along a direct ancestral line.
![Page 12: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/12.jpg)
Investigation 12B
• How can DNA be used to solve a “crime?
DNA Forensics
![Page 13: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/13.jpg)
Technology Connection
• Scientists estimate that humans contains between 20,000 and 25,000 genes.
• Eventually, scientists want understand what all the individual genes do.
Cracking the Code
![Page 14: Genetics Chapter Twelve: The Code of Life 12.1 The Role of DNA in Heredity 12.2 DNA and Technology](https://reader031.vdocuments.site/reader031/viewer/2022032203/56649dff5503460f94ae8606/html5/thumbnails/14.jpg)
Activity
• In this activity, your class will perform a skit to show how genes work.
Gene Drama