1 / 20

Weird Stuff

Weird Stuff. https://www.youtube.com/watch?v=0WN_YQUiWtU Glowing Fish http://www.mnn.com/green-tech/research-innovations/photos/12-bizarre-examples-of-genetic-engineering/mad-science. Chapter 13 Biotechnology!. Biotechnology.

dickerman
Télécharger la présentation

Weird Stuff

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. Weird Stuff • https://www.youtube.com/watch?v=0WN_YQUiWtU Glowing Fish • http://www.mnn.com/green-tech/research-innovations/photos/12-bizarre-examples-of-genetic-engineering/mad-science

  2. Chapter 13 Biotechnology!

  3. Biotechnology • Biotechnology: using organisms or their components to perform practical tasks or provide useful products

  4. Selective breeding • Mating organisms to produce offspring with desired traits (has been around since ancient times) • Inbreeding= mating between closely related individuals • Hybrids– offspring of parents with different forms of traits. In plants, hybrids are often stronger or bigger. • Read artificial selection article

  5. Recombinant DNA and Genetic Engineering • Recombinant DNA: DNA in which genes from 2 different sources are linked • Genetic engineering: cutting out DNA from one organism and putting it into another. (i.e. how we make recombinant DNA) • Transgenic organism= an organism with recombinant DNA • ..\..\AP BIO\articles\genetic engineering and Weird combos of organisms!.doc • C:\Documents and Settings\BBAUGHMAN\Desktop\COURSES\LSSI Summer Institute Resources\LSSI Prog. Resources\GFP Mice

  6. Genetic Engineering Steps • Step 1: Isolate DNA from organisms • Step 2: Use Restriction enzymes to cut up the DNA (restriction) • They are very specific • Restriction site: where the restriction enzyme cuts the DNA (a specific sequence) • They are palindromes • Sticky end: short single-stranded extensions of restriction fragments C:\Documents and Settings\BBAUGHMAN\Desktop\bio powerpoints\Chapter 13 BDOL IC

  7. Step 3: Attach restriction fragments permanently • DNAligase: enzyme that can join the DNA fragments • joins sugar to phosphate in backbone

  8. Step 4: put the recombinant DNA into the cell • Vector: Something that carries foreign DNA into a cell • Ex. Bacterial plasmids, viruses

  9. Bacterial plasmids in gene cloning

  10. Gene Cloning • Clone = genetically identical copy • Gene cloning: Making more copies of a gene • Bacterial plasmid with recombinant DNA reproduces as the bacteria reproduce. F:\Desktop\animations from bio powerpoints\Chapter 13 BDOL IC http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter16/animations.html# https://www.dnalc.org/resources/3d/20-mechanism-of-recombination.html

  11. http://www.youtube.com/watch?v=bbZiOiPVG6c Somatic cell nuclear transfer • http://learn.genetics.utah.edu/content/cloning/whatiscloning/ Animal Cloning • Making a genetically identical copy of an animal • ex. Dolly the sheep • Remove Nucleus from an egg • Fuse this unfertilized egg with a body cell or inject a body cell nucleus into the egg.

  12. DNA Analysis & Genomics • PCR (polymerase chain reaction) • Gel electrophoresis and DNA fingerprinting • DNA sequencing • Human genomeproject http://pix11.com/2015/01/12/wrongfully-convicted-man-spends-21-years-in-prison-dies-11-months-after-being-exonerated/ DNA Evidence

  13. Polymerase chain reaction (PCR) • Replication of any piece of DNA in a test tube (in vitro) • Main Point: Makes many copies of DNA!! • Materials in tube: primers (single-stranded DNA), DNA polymerase, nucleotides • Heat and cool in thermal cycler • Applications: fossils, forensics, prenatal diagnosis, etc. http://www.sumanasinc.com/webcontent/animations/content/pcr.html

  14. DNA Analysis using Gel Electrophoresis • Step1: Cut up DNA with Restriction Enzymes • Step 2: Gel electrophoresis: separates DNA on the basis of size (smaller bands travel further) creating DNA bands of fragments of the same length • Step 3: Look at your results on the gel. • DNA Fingerprinting • Animation http://www.sumanasinc.com/webcontent/anisamples/majorsbiology/gelelectrophoresis.html • http://www.dnalc.org/ddnalc/resources/animations.html • http://learn.genetics.utah.edu/units/biotech/gel/ good gel electrophoresis virtual lab C:\Documents and Settings\BBAUGHMAN\Desktop\bio powerpoints\Chapter 13 BDOL IC C:\Documents and Settings\BBAUGHMAN\Desktop\bio powerpoints\Chapter 13 BDOL IC

  15. Based on what you just learned, which lane contains the largest fragment of DNA? The shortest? 1 2 3 4 - Injection wells + Knowledge Check! LANES DNA

  16. Knowledge Check • Use the DNA gel, and your knowledge of DNA fingerprint to analyze and determine which suspect’s DNA matches the DNA at the crime scene. DNA at crime scene Suspect 1 2 3 - +

  17. DNA Analysis and Paternity Problem • Look at the electrophoresis gel picture on the right  • Two of the individuals are parents and one is their child. • Answer the following: • Which individual is the child? • How many bands of DNA does the child share with the mother? The father? Explain why. • Based off of the gel, what color are the mother’s eyes? • Just kidding…

  18. O.J. Simpson capital murder case,1/95-9/95 • Odds of blood in Ford Bronco not being R. Goldman’s: • 6.5 billion to 1 • Odds of blood on socks in bedroom not being N. Brown-Simpson’s: • 8.5 billion to 1 • Odds of blood on glove not being from R. Goldman, N. Brown-Simpson, and O.J. Simpson: • 21.5 billion to 1 • Number of people on planet earth: • 6.1 billion • Odds of being struck by lightning in the U.S.: • 2.8 million to 1 • Odds of winning the Illinois Big Game lottery: • 76 million to 1 • Odds of getting killed driving to the gas station to buy a lottery ticket • 4.5 million to 1 • Odds of seeing 3 albino deer at the same time: • 85 million to 1 • Odds of having quintuplets: • 85 million to 1 • Odds of being struck by a meteorite: • 10 trillion to 1

  19. DNA Sequencing • Reading the nitrogen bases (the letters) on DNA • Genome: all of an organism’s genetic material. • Human Genome Project • Outcomes: • Identification of genes involved in disease. • Genetic testing improved. • Greater understanding of genetics. • Ethical issues with genetic testing etc. https://www.youtube.com/watch?v=8Fq2mOCTX6k Cracking your genetic code movie

  20. Is Genetic Modification In Agriculture a Good Idea (Evaluate) Assignment: Make a pros and cons table as you watch the following videos: After finishing them all, write a paragraph with your perspective on the issue of genetic modification in agriculture. Be sure to justify your perspective with facts/evidence from the videos. Promotional view: • http://coalitionforsafeaffordablefood.org/benefits-of-biotechnology/b • Bill Nye Video (another perspective): • https://www.youtube.com/watch?v=8z_CqyB1dQo • Opposing View: • https://www.youtube.com/watch?v=1H9WZGKQeYg

More Related