Genetic Enegineering Forensics And Biology
5 Questions
| Attempts: 1000
.
Questions and Answers
- 1.What is the name of the enzyme that cleaves (cuts) DNA into fragments?
- A.
Ligase
- B.
DNA synthase
- C.
Restrictive Enzymes
- D.
Lactase
- 2.In Gel Electrophoresis, an electrical current (negative charges) will cause the smaller slightly charged DNA fragments to move the ____ towards the positive end (compared with the larger DNA fragments).
- A.
Farthest
- B.
Slowest
- C.
Least
- 3.What is the function of PCR (Polymerase Chain Reaction)?
- A.
PCR moves fragments of DNA away from the negative charge
- B.
PCR makes multiple copies of fragments of DNA
- C.
Arranges DNA according to size.
- D.
Breaks DNA into equal sized pieces.
- 4.CLICK on ALL that apply. (NOTE: these is NO partial credit!) DNA can be used for analysis. DNA can USUALLY be used from (choose all that apply):
- A.
Blood
- B.
Cheek cells (buccal swab)
- C.
Cleaned fingernails
- D.
Hair follicles
- E.
Hair stands (shaft) that falls out naturally.
- 5.Approximately how many base pairs are in the human genome?
- A.
100 million
- B.
5 billion
- C.
100,000
- D.
3 billion base pairs
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