Hair Part 1

Multiple Choice

Why is hair considered an important type of evidence in criminal investigations?

• Because it can reveal the identity of a suspect through DNA analysis

• Because it is always present at crime scenes

• Because it is easy to collect and analyze

• Because it cannot be contaminated

Multiple Choice

Which of the following statements about isotopes is correct?

• Isotopes have the same number of protons but different numbers of neutrons.

• Isotopes have different numbers of protons and neutrons.

• Isotopes have the same atomic mass but different atomic numbers.

• Isotopes are different elements entirely.

Fill in the Blanks

Fill in the blank: IRMS provides a chemical timeline based on hair

and growth.

Multiple Choice

Which scientific technique played a key role in identifying Nikole Bakoles' origin and movement?

• DNA fingerprinting

• Isotope-ratio mass spectrometry (IRMS)

• Gas chromatography

• Fingerprint analysis

Multiple Select

Which of the following are advantages of using hair as forensic evidence?

• Resistant to decay

• Provides class characteristics

• Can connect suspect, victim, and scene

• Can determine exact time of death

Multiple Choice

Which type of DNA is found in hair with a root or follicle?

• Nuclear DNA

• Mitochondrial DNA

• Plasmid DNA

• Viral DNA

Multiple Choice

Which of the following historical events contributed to the development of forensic hair analysis?

• 1847: Duchesse de Praeslin case

• 1883: Taylor & Stevenson publish forensic hair illustrations

• 1910: Balthazard & Lambert studied animal vs. human hair

• All of the above

Fill in the Blanks

In 2015, a DOJ/FBI review found that

percent of microscopic hair cases had errors.

Multiple Select

Select all the modern advances in hair analysis mentioned in the lesson.

• Shift to quantitative science

• Use of mtDNA sequencing and IRMS

• Reliance solely on microscopic comparison

• Collaboration between forensic agencies

Open Ended

What questions do you still have about the use of hair analysis in forensic science or the case study of Nikole Bakoles?