Name:_______________________________Date:_____________________Period:____________ Hair WebQuest with Questions… Go to the following websites and complete the questions. http://www.fbi.gov/about-us/lab/forensic-science-communications/fsc/july2000/deedric1.htm/ 1. What is the protein that hair is primarily composed of? 2. What are some factors that impact the reliability of a hair association? 3. Explain how a comparison microscope works. 4. What is the first step in the hair identification process? 5. Give the three phases of hair growth and explain each. 6. On a healthy head, what percent of hair follicles are in the anagen phase, catagen phase, and telogen phase? 7. What is the average period of growth for scalp hair? 8. An individual sheds approximately how many head hairs a day? 9. How do the roots of hairs that fell out naturally versus being removed forcibly differ? http://www.fbi.gov/about-us/lab/forensic-science-communications/fsc/jan2004/index.htm/research/200 4_01_research01b.htm 10. Give the three regions of hair. 11. What is keratin and what is melanin? 12. What is the medulla? 13. What are the three basic medullary types? 14. What are the three basic types of animal hairs? 15. Give three differences between animal and human hair. 16. What are the limitations of DNA analysis of hair? 17. How many randomly selected head hairs are generally considered adequate to represent the range of hair characteristics of that individual? http://www.trutv.com/library/crime/criminal_mind/forensics/trace/4.html 18. Why were the police confident they would solve the murder of Eva Shoen? 19. What had Marquis supposedly done to the murder weapon so it couldn’t be used to prove it was the weapon? 20. How did hair evidence help in the case of Frank Marquis? Continue to page five… 21. Are hair specimens considered individual or class evidence? 22. List 5 conclusions that can be made from hair analysis. For example, whether the source is a human or an animal. 23. How does infant and adult hair differ? 24. Explain the first case that utilized neutron activation analysis. http://www.hair-science.com/_int/_en/hp/ Play the Hair Profiler Game… 25. What is the crime committed in the game? 26. How much time does the team have to find their report? 27. How many people are on each team? 28. How many hairs does the person in the game believe an individual looses in a day? 29. What are the three pieces of equipment that they use to analyze the hair samples? 30. Give four pieces of information that you learned about the individuals from the hair samples. 31. Who was the thief?
