Download presentation
Published byJeffrey Stevenson Modified over 9 years ago
1
If an organism cannot obtain its own food, it is still living? Why?
What characteristic of STERNGRR is that? A human using insulin to control the amount of sugar in their blood is an example of what characteristic of STERNGRR? Warmup 9/16
2
DNA Technology
3
Gel Electrophoresis (DNA Fingerprinting)
4
Restriction enzymes are used to cut the DNA into pieces
The DNA is placed into the gel and an electric current is run through it The smaller pieces of DNA will move through the gel faster How does it work?
5
Real World Application
Determining who your biological parents are: only ½ of the DNA will match mom, the other ½ matches dad Maternity testing: mother Paternity Testing: Father Real World Application
6
Crime Scene Investigation: all of the DNA should match
Matching DNA found at the crime scene to suspects Natural Selection Evidence The more bands organisms share, the more related they are
9
M C F F2
10
Warmup 9/17 What are 3 ways we can use a gel electrophoresis?
What is the role of a restriction enzyme? What causes the bands of a DNA fingerprint to separate? Which size travels the least? Warmup 9/17
11
Restriction enzymes are used to cut DNA at specific points.
Step 1 is to cut the DNA. Step 2 is to place the DNA into a gel. Step 3 is to run electricity through the DNA which separates the DNA. The shorter DNA segments travel furthest down the gel because they can get through it easier. SG Answers 1-7
12
Maternity testing Paternity testing Criminal Investigation Natural Selection Evidence
The criminal is Suspect 2 because the bands match up the best with the crime scene DNA. The most recently evolved organism is organism 2. They share 5 bands. Larry is the father.
13
Transgenics
14
Transgenic Technology
Genetic Engineering: modification of organisms by humans so the organism will do what we want it to Recombinant DNA: DNA that has been taken from one species and placed into another species Transgenic Technology
15
How is it made? Restriction Enzymes are used to cut DNA at specific spots The cut DNA is moved to another piece of DNA and is inserted using an enzyme called DNA synthase
17
Transgenic Organism: Organism with the DNA of another species inside it (it has recombinant DNA)
18
How is it used? Medicine Produce insulin for diabetics
Produce growth hormone for dwarfs Produce vaccines How is it used?
19
Warmup 9/18 What is recombinant DNA?
How is recombinant DNA used in DNA technology? What is a genetically modified organism? What are 2 examples of genetically modified organisms and why were they made? Warmup 9/18
20
Agriculture Make crops resistant to herbicides and repel insects
Increase the quality and quantity of oil in Canola plants
21
Genetically Modified Organism: organism that has been modified by humans to better fulfill our needs
22
Ethics of Transgenics Pros:
The GMOs we make produce more food, are juicier, have more vitamins that their normal counterpart The GMOs are more resistant to pests, drought, and herbicides Ethics of Transgenics
23
While no problems have been reported yet, many people are unsure if GMOs will have unforeseen long-term consequences People are not told that the food they are buying is a GMO
24
8. Transgenics are made when you pinsert the DNA of one organism into another organism.
9. Two agricultural uses of transgenics are increasing the quality of the food (vitamins, size, etc) and making them resistant to insects. 10. Skip this question. Answers to questions 8-12
25
11. Two medical uses of transgenics are to create insulin and growth hormone.
12. Insulin is produced by inserting the human gene for insulin into a bacteria, allowing the bacteria to grow and produce the insulin, then harvesting the insulin.
26
Human Genome Project Genetic Map of all the DNA in a human
Each segment or gene codes for a protein There are 30,000 genes in the human body Took 13 years to complete Human Genome Project
27
Human Genome Project How does this help us? What did it cost?
Now that we know where harmful genes are, we can check to see if a person has it What did it cost? Over 13 years, it cost $3,000,000,000 (3 billion) Human Genome Project
29
Stem Cells and Gene Therapy
Stem Cells: cells in an organism that do not have a specific function and can become any cell in the organism Stem Cells and Gene Therapy
30
Applications Regrow tissues that do not normally fix themselves
Gene Therapy: changing the DNA of humans with disorders Replacing the degenerating nerves of Alzheimer’s and Parkinson’s patients so they are healed Replacing the cells that produce insulin so people are no longer diabetic Applications
31
Cloning: the process of producing an exact copy of the original organism
The new organism is genetically identical to its “parent” We have been cloning for many years but we have never cloned a human before due to ethical reasons Should we clone other organisms? Cloning
32
Warmup 2/25 What is a stem cell?
What was the goal of the Human Genome Project? How can gene therapy be used to cure genetic disorders? Warmup 2/25
33
13. The goal of the HGP was to map out the genes on human DNA.
14. There were approximately 30,000 genes sequences by the HGP 15. One use of gene therapy that has resulted from the HGP is the cure for ALD. 16. The ethical dilemmas associated with gene therapy center around the retrieval of embryonic stem cells. 17. Stem cells are cells that are unspecialized. They can be used to regrow cells/tissues/organs that have degenerated. SG 13-17
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.