Forensics Review

DNA fingerprinting works because

• Most genes are dominant

• All organisms contain RNA

• The most important genes are different among most people

• No two people, except identical twins, have exactly the same DNA 

The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel electrophoresis results is shown below. Which conclusion is valid based on the gel electrophoresis results?

• They have the correct child, because her genetic information is identical to that of the father.

  
  

• They have the wrong child, because her genetic information does not match that of either parent.

• They have the correct child, because her genetic information came from both parents.

  
  

• They have the wrong child, because her genetic information matches only that of the mother.

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When fibers are transferred directly from victim to suspect or suspect to victim, this is called:

• necessary transfer.

• absolute transfer.

• direct transfer.

• None of these choices.

The transfer of evidence such as a fiber from a source to a person, then to another person, is called:

• primary transfer.

• secondary transfer.

• tertiary transfer.

• direct transfer.

Fiber evidence is gathered with:

• vacuums.

• tape.

• glue.

• forceps.

• lint roller.

A forensic scientist performs a burn test and finds that the fiber melts when it is put in the flame. This suggests that the fiber is…

• A synthetic fiber

• A natural fiber

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A blue fiber found at the crime scene is…

• Direct Evidence

• Class Evidence

• Testimonial Evidence

• Individual Evidence

What is the primary purpose of forensic science?

• To entertain the public

• To solve crimes by analyzing evidence

• To create fictional crime stories

• To study ancient civilizations

Which of the following is a common method used in forensic toxicology?

• DNA sequencing

• Gas chromatography

• X-ray diffraction

• Carbon dating

In forensic anthropology, what is the main focus when examining skeletal remains?

• Determining the age of the bones

• Identifying the cause of death

• Reconstructing the facial features

• Estimating the time since death