Chapter 7: DNA Profile Exam 1ac
20 Questions
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Questions and Answers
- 1.The process where DNA is cut and placed on a gel where it moves based on size to create a pattern is known as Gel Electrophoresis.
- A.
True
- B.
False
- 2.DNA in a gel electrophoresis separates based on its size.
- A.
True
- B.
False
- 3.When DNA moves through the gel, the larger size fragments travel the furthest.
- A.
True
- B.
False
- 4.DNA can be extracted from blood, semen, saliva, and hair follicles.
- A.
True
- B.
False
- 5.By comparing the DNA from a crime scene to various suspects, forensics examiners can link a suspect to a crime scene.
- A.
True
- B.
False
- 6.A gene that has more than one alternating form, like those that code for various blood types is known as a(n):
- A.
Allele
- B.
Chromosome
- C.
Gene
- D.
STR
- 7.There are 46 __________________ in human cells, which are long strand of DNA found in the nucleus.
- A.
Chromosomes
- B.
Alleles
- C.
Genes
- D.
PCRs
- 8.A molecule labeled with a radioactive isotope that attaches to a particular sequence of DNA is known as a:
- A.
Probe
- B.
PCR
- C.
Allele
- D.
Chromosome
- 9.The pattern of DNA fragments created through the process of gel electrophoresis.
- A.
DNA Fingerprint
- B.
PCR
- C.
STR
- D.
VNTR
- 10.A method of separating DNA molecules based on size by passing them through a argarose gel to create a DNA fingerprint.
- A.
Electrophoresis
- B.
Gene
- C.
PCR
- D.
STR
- 11.A method used to replicate small samples of DNA in to millions of copies is known as
- A.
PCR
- B.
STR
- C.
VNTR
- D.
Restriction enzyme
- 12.A segment of DNA that codes for a protein or trait.
- A.
Gene
- B.
Allele
- C.
Chromosome
- D.
PCR
- 13.A molecule that cuts a DNA molecule at a specific base sequence
- A.
Restriction Enzyme
- B.
PCR
- C.
STR
- D.
VNTR
- 14.Tandem repeats of short DNA sequences 2-5 base pairs in length.
- A.
STR
- B.
VNTR
- C.
PCR
- D.
Allele
- 15.GGCTCTGGATCGCTAG|GGCTCTGGATCGCTAG|GGCTCTGGATCGCTAGThe DNA code above repeats 3 times and would be classified as a
- A.
Variable number tandem repeat
- B.
Short tandem repeat
- C.
PCR
- D.
Gel Electrophoresis
- 16.
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DNA from a Crime Scene was deposited in row 1. DNA was obtained from suspects Bob, Sue, John , and Lisa. Which suspects DNA matches the crime scene DNA?- A.
Bob
- B.
Sue
- C.
John
- D.
Lisa
- 17.
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P=Crime Scene DNA, S1=Suspect 1, S2= Suspect 2, S3=Suspect 3.Which suspect left DNA at the Crime Scene?- A.
P
- B.
S1
- C.
S2
- D.
S3
- 18.DNA from a crime scene matched that of a suspect. This means that the suspect, without a doubt, committed the crime.
- A.
True
- B.
False
- 19.
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Two men were involved in a paternity suit brought by a woman against her estranged husband. The woman was seeking child support for her infant from her husband, but the husband accused the woman's lover of being the biological father. Unfortunately, blood typing was inconclusive: both men had the same blood type. So the judge ordered DNA analysis. A sample of blood was taken from the mother, the baby, and both men. The results are shown below. Who is the father of the baby? Which band was most useful in making your decision? - 20.A DNA lab matches one DNA segment of a suspect to one DNA segment recovered from blood at the crime scene through Gel Electrophoresis. Is this enough evidence to convict the suspect of the crime? Explain your answer.
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