You have been pulled over by a police officer. He begins performing the following tests: horizontal gaze nystagmus, walk and turn, and one-leg stand. What type of tests are these?

ADUI field tests

Bimpairment tests

Cbreathalyzer test

Dpsychophysical tests

A forensic team collecting evidence from a crime scene discovers a clump of hair grasped in the victim's hand, very likely removed forcibly from the suspect. What factor would limit the usefulness of this evidence if no 'persons of interest' have been identified?

AThe suspect's DNA is not on file.

BNo DNA can be extracted from the sample.

CThe hair doesn't exhibit clear characteristics of ethnic origin.

DThe hair has been dyed so suspect's natural color can't be determined

If an arrest is made because a suspect fails the field sobriety test and has a BAC level of .08% or higher, their blood is collected at the police station and preserved for further analysis.

Which technique is used for a more accurate BAC at the time of arrest?

AScott test

Bgas chromatography

Cpaper chromatography

Dmicrocrystalline test

Which of the following statements is true?

AHair is always considered to be individual evidence, meaning it will pinpoint the individual.

BHair is always considered to be class evidence, meaning you can never pinpoint the individual.

CHair with the root/ follicular tag may contain DNA and is considered individual evidence but without the root is considered to be class evidence.

DNone of the above