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WorksheetsDNA Analysis Exam (Asynchronous)
Total questions: 25
Worksheet time: 54mins
DNA "profiling" is a better way to refer to the process as opposed to DNA "fingerprinting" because it has nothing to do with fingerprinting or fingerprints themselves.
True
False
DNA fingerprinting or profiling can be useful for many purposes. Which of the following is not one of them?
Identify potential suspects whose DNA may match evidence left at the crime scene.
To clear persons wrongly accused of crimes.
To establish paternity and other family relationships.
Identifying rootless hairs of a suspect.
What is DNA?
Hereditary material of of organisms.
A common way to identify people by their unique genetic code.
Specific sequences of nucleotides usually found on a chromosome.
Fundamental components of all living cells.
Which of the following is not one of the four bases that are paired and held together in a DNA molecule?
Adenine
Thymine
Guanine
Cytine
DNA is in every nucleated cell of the human body.
True
False
DNA can be extracted from all of the following except.....
blood
semen
urine
shedded hairs
DNA is in a structure known as a(n)......
ellipse
parabola
helix
hyperbola
The two types of DNA are......
nuclear and cytoplasmic
ribosomal and reticulated
mitochondrial and reticulated
nuclear and mitochondrial
The Human Genome project was....
The code name for the American-led effort to develop a functional atomic weapon during World War II.
A research effort that involves sending viable humans to Mars to serve as a initial colonizers of the planet.
A unified effort to identify and determine the sequence of all genes found on a human chromosome.
The common name of a highly classified United States Air Force (USAF) facility located within the Nevada Test and Training Range that specializes in the discovery and study of extraterrestrial beings.
A forensic scientist was able to recover a small amount of DNA from a small droplet of blood at a crime scene. Upon further examination it was determined that the sample was so small that it would be consumed (used up) after just one test. What DNA typing technique should the scientist use to ensure there is enough of the sample for multiple tests?
RFLP Analysis
Electrophoresis
STR: Short Tandem Repeats
PCR: Polymerase Chain Reaction
To identify individuals, forensic scientists can scan ___ different regions that vary from person to person; they then use the data to create a DNA profile of the individual.
13
11
9
7
Identify which of the following would be a complimentary base to the strand below. (Hint: A-T, G-C)
A T C G A G C T A
TAGATCTAG
ACTTAGACT
TAGCTCGAT
AAGTGCATC
Gel electrophoresis uses what to separate fragments?
polarity of DNA
molarity of DNA
molality of DNA
nonpolarity of DNA
What is CODIS?
Combined DNA Index System
Criminal DNA Information System
Computer Derived Index System
Convict Directory of Information System
The FBI maintains a __________ index that has DNA profiles from crime scene evidence and an____________ index with DNA profiles of individuals convicted of sexual offenses and other violent crimes.
offender; forensic
forensic, offender
Matches made among profiles in forensic index have no forensic value. They often do not link crime scenes together and do not identify repeat offenders. If a match is found it is often difficult for police in different jurisdictions to coordinate their investigations and share leads they have developed.
True
False
What type of DNA is inherited only from the mother?
Nuclear DNA
Non-Nucleated DNA
Mitochondrial DNA
Ribosomal DNA
What type of DNA is inherited from the mother and father?
Nuclear DNA
Non-Nucleated DNA
Mitochondrial DNA
Ribosomal DNA
Cases in which hair, bones, and teeth are the only evidence retrieved/available from a crime scene are particularly well suited to mtDNA(mitochondrial DNA) comparison and analysis.
True
False
What part of the blood contains the nuclear DNA and has the most value to a forensic scientist?
red blood cells
plasma
platelets
white blood cells
What percentage of DNA is different from person to person?
99.9%
0.1%
90%
10%
DNA is only located in the nucleus of cells on the chromosomes.
True
False
Select the best response that can be used to fill in/complete the passage.
The Innocence Project at Cardozo School of Law began in 1992. Their mission is to exonerate (free) the wrongfully convicted through __________________________________________________________ and the implementation of reforms to prevent wrongful convictions. As of January,2008, 212 have been exonerated.
jailhouse reformation programs
post-conviction DNA testing
educating convicted about their legal rights
providing educational programs that incarcerated individuals may participate
How was the "Green River Killer" case connected to the use of Forensic DNA Analysis.
The evidence left at the crime scene included perspiration (sweat) samples left by the killer. The samples were compared to that of Walter Osbourne. Osbourne's DNA was compared to the crime scene samples using DNA testing (a new technique at the time). He was arrested and confessed to the murder of 24 women.
The evidence left at the crime scene included blood samples left by the killer. The samples were compared to that of Colin Ross. Ross's DNA was compared to the crime scene samples using DNA testing (a new technique at the time). He was arrested and but was later released due to lack of evidence.
The evidence left at the crime scene included semen samples left by the killer. The samples were compared to that of Gary Ridgway. Ridgway's DNA was compared to the crime scene samples using DNA testing (a new technique at the time). He was arrested and confessed to the murder of 48 women.
The evidence left at the crime scene included saliva samples left by the killer. The samples were compared to that of Jeffrey MacDonald. MacDonald's DNA was compared to the crime scene samples using DNA testing (a new technique at the time). He was never arrested due to lack of evidence and the crimes remain unsolved.
The Forensic Files Case "DNA Dragnet" was an example of how forensic DNA Analysis can be used to identify the perpetrator of a crime. Please select the correct combination of information from that episode.
Place: Spartanburg, South Carolina, Victims: Damaris Wynn; Rhonda Ward, Crime: Homicide, Sexual Assault, Key Piece of Evidence: Walkman, Rape Kit, Enhanced Surveillance Video, Suspects: James Wynn , Chester Donovan , Fredrick Evans. Outcome: Frederick Evans convicted and sentenced to Death.
Place: Raleigh, North Carolina, Victims:James Wynn, Chester Donovan , Fredrick Evans, Crime: Triple Homicide, Key Piece of Evidence: Car Radio, Gun, Eyewitness Testimony, Suspects: Damaris Wynn; Rhonda Ward. Outcome: Damaris Wynn was convicted and sentenced 25 years.
Place: Rome, Georgia, Victims:James Wynn, Wanda Ward, Crime: Armed Robbery & Double Homicide, Key Piece of Evidence: Audio Recorded Jailhouse Confession, Knife, Eyewitness Testimony, Suspects: Chester Donovan, Fredrick Evans,Damaris Wynn; Outcome: Chester Donovan was convicted and sentenced 25 years-life.
