Biotechnology and the Human Genome REVIEW

1. Biotechnology and the Human GenomeREVIEW CHAPTER 13 + 14a

2. Which enzyme? • Is used in PCR to join nucleotides (not separate like it states on the study sheet) to make a strand of DNA? • PCR animation • ANSWER: Taq polymerase

3. Where was Taq polymerase discovered? • A. Jamaica • B. Hot Springs • C. Antarctica • D. Atlantic Ocean • ANSWER: B Hot Springs

4. Which enzyme is used to cut DNA? • Ligase • Restriction • TAQ • Ti • ANSWER: restriction

5. Which enzyme is used to paste sticky ends (bind plasmid to DNA fragment)? • Ligase • Restriction • TAQ • Ti • ANSWER: ligase

6. Where is the plasmid? B A A C D B D

7. What carries genes that destroys antibiotics; • Also used as a vector for genetic engineering? • ANSWER: R plasmid

8. What is an organism that has genes inserted in it from another organism? • ANSWER: transgenic

9. What is an organism (or plasmid) that carries an organism (or genes) into another organism? • ANSWER: vector

10. What is a plasmid from Agrobacterium tumefaciens to give genetic material to plants? • ANSWER: Ti plasmid

11. What matches this “sticky end?” • A G T A C G T A A • G C A T T • AGTA • TCAT • Answer: TCAT

12. PCR is useful to do what? • ANSWER: make large copies from a small amount of DNA

13. Who Invented the PCR? • ANSWER: Kary Mullis

14. How does the number of DNA change with each cycle in the PCR? • ANSWER: Doubles

15. What does a gel electrophoresis do? • ANSWER: separates the DNA fragments according to size

16. Which DNA fragments are the longest? • ANSWER: the ones at the top (near wells)

17. What two things determine where the strands will be on the gel? • ANSWER: size of the fragments + charge • (DNA is negative and will move toward the positive electrode)

18. Gel Electrophoresis Animation • Click on the pictureClick Here

19. In a gel electrophoresis, what direction do the DNA fragments move? • Acidic to basic • Positive to negative • Basic to acidic • Negative to positive ANSWER:negative to positive

20. Fill in the blanks for the DNA fragments in a gel electrophoresis: • A. shorter longer • B. shorter longer (see next slide for answer) A ________ DNA segment will travel less far A _______DNA segment will travel farther

22. What are jumping genes? • ANSWER: also called transposons • are sequences of DNA that can move around to different positions within the genome of a single cell Animation Quiz 5 - Transposons: Shifting Segments of the Genome

23. Who discovered jumping genes? • ANSWER: Barbara McClintock

24. Where would telomeres be found? • ANSWER: a region of repetitive DNA at the end of a chromosome, which protects the end of the chromosome from deterioration.

25. What are RFLP’s? • ANSWER: Restriction Fragment Length Polymorphism • Cut by restriction enzymes • Rflp animation

26. What is biotechnology? • ANSWER: use of living organisms or their products to modify human health and the human environment.

27. What is the number? • Year Human Genome Project began? • ANSWER: 1990

28. What is the number? • Year Human Genome Project was completed? • ANSWER: 2003

29. What number? • Number of genes (working genes) that actually code for proteins in the human genome? • ANSWER: 20,000 – 25,000

30. What is the number? • Estimated number of genes in E. coli bacterial cell? • ANSWER: 2000

31. What is the number? • Percentage of nucleotide bases alike in all humans? • ANSWER: 99.9%

32. What is the number? • Percentage of DNA in a human cell thought to be non-coding (junk DNA)? • ANSWER: 98% (was thought to be 97%)

33. What is the number? • Of nucleotide pairs (or base pairs) in a haploid set of chromosomes? • ANSWER: 3 billion

34. A. Flavr Savr B. Golden Rice C. Roundup Ready D. Bt Cotton 1. given a gene increases skin toughness 2. gene isolated from soil bacterium to kill certain insects (corn and cotton borers) 3. vitamin-A producing gene added 4. gene put into soybeans to control weeds due to its glyphosate ANSWER: 1-A, 2-D, 3-B, 4-C Match the GM PRODUCTS:

35. VNTR’s1. Who’s child of Mom and Dad2. Who is not?

36. How do you read a DNA fingerprint?

37. How are the DNA fingerprints made? (Put in order) • ____Paper blot to transfer DNA bars to paper or photograph • ____Pipette DNA in Gel wells • ____Connect to voltage supply • ____Cut DNA segment with restriction enzymes • _____Rinse blot with probes to make autoradiograph • Answer: 4, 2, 3, 1, 5

38. A. Extension B. Annealing C. Denaturing 1. heated 94oC to break apart DNA strands 2. DNA primers added when cooled 54oC 3. heated to 72oC to make the DNA strand copy ANSWER: 1-C, 2-B, 3-A Steps of PCR

40. A. McClintock B. Venter C. Mullis 1. discovered transposons (jumping genes) 2. Heads Ceelera, an automated genome coder at fast pace 3. devised the PCR ANSWER: 1-A, 2-B, 3-C Match the scientists:

41. CSI had a small amount of blood from a crime scene. What could be done to make a bigger sample? • ANSWER: PCR

42. What must be done to cause an egg and the udder cell of a sheep to fuse to form an embryo? • ANSWER: jolt with electricity

43. What is this structure called? • ANSWER: recombinant DNA

44. Alba has genes from a jellyfish. • What do you call organisms that have genes from other organisms? • ANSWER: transgenic

45. Clones are organisms that have exact genetic material. Identical twins. Copies of recombinant DNA ALL of the above. ANSWER: all of the above What is cloning?

46. What is the name of the first cloned sheep? • ANSWER: Dolly • IS SHE STILL ALIVE?No, she died early with adult diseases, like arthritis and lung cancer. • (typical is 10-12 years)

47. What process separates DNA fragments? • PCR • Gel electrophoresis • Recombining DNA • ANSWER: Gel electrophoresis

48. What is a Radioactive Probe? • A: Labeled short strand of DNA to find a specific gene (like CF gene)

49. What are four goals of the HGP? • 1.To determine the sequences of the 3 billion chemical base pairs that make up human DNA.

50. What are four goals of the HGP? • 2. identify all the approximatelyworking 25,000 genes in human DNA