applied genetics ch. 24 how the principles of genetics are used
TRANSCRIPT
Applied Genetics Ch. 24Applied Genetics Ch. 24
How the Principles of Genetics are used.
How have humans applied How have humans applied Genetics?Genetics?
People have bread plants and animals for specific desirable traits for thousands of years.
Selective breeding is the crossing of plants and animals with desired characteristics to produce offspring with those characteristics.
Other cases of Selective Other cases of Selective BreedingBreeding
Disease resistant plants such as corn and wheat.
Variations of flowers for color or shape
Bigger, leaner livestock
How is a Hybrid produced?How is a Hybrid produced?
Sometimes breed offspring with two or more desired traits
Hybridization is the crossing of two different but related species.
Ex. Mule (horse/donkey)Beefalo
Mule Beefalo
Some plants offspring are Some plants offspring are bread together?bread together?
Some desired traits are amplified by inbreeding offspring of the same species.This could make a desired trait more
prominent, but will not allow new genes to enter the species.
Where is the future of Where is the future of Genetics?Genetics?
Genetic Engineering is the process in which genes or pieces of DNA are transferred from one organism to another.
Combining DNA from one organism with the DNA of another.
This process is called recombinant DNA
Recombinant DNARecombinant DNA
How does it happen?How does it happen? Usually a gene from a higher organism is placed
into to a lower organism. Human genes have been inserted into bacteria
and yeast to produce certain proteins. Ex. Insulin A gene is usually inserted into a ring of DNA
from bacterial called a plasmid. When the plasmid is placed in a bacteria the
bacteria will produce the protein coded in the plasmid.
Genetically Engineered Genetically Engineered ProductsProducts
MedicineInsulin, Growth Hormone, Vaccines, interferons
More Genetically More Genetically Engineered ProductsEngineered Products
AgricultureCrops that fight
diseaseFreeze resistant
crops
Cloning is apart of Genetic Cloning is apart of Genetic EngineeringEngineering
Monkeys, sheep, and bacteria have already been cloned.
Should humans or parts of humans?
Is Genetic Engineering Is Genetic Engineering Right?Right?
Arguments ForNew medical
breakthroughsSave livesLimit suffering
from disease
Arguments AgainstIt is “playing God”!We are messing
with nature.It may lead to a
supreme race.
Web TaskWeb Task
Run a web search for information on genetic engineering.
Then in Microsoft Word, summarize two of the sites you found. Remember to give the addresses.
Once done with the summaries, give your opinion on genetic engineering and support it.
Save your paper to a disk and hand it in. Make sure your name is in the file name.
Task Scoring RubricTask Scoring Rubric
5points for each site summarized in a complete well written paragraph.
5points explaining your opinion of genetic engineering.
5points for supporting your opinion with facts from sites or from the presentation.
Total of 20 points as a quiz grade.