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Lauren Wright Crime Scene Science Questions 1-14, 17-19

1. True 2. False 3. False 4. True

5. A 6. D 7. A 8. A 9. A 10. A 11. C 12. C 13. B 14. B

17. In animal hair, the medulla is continuous and larger than the medulla of a human’s hair. Also, in animals, the pattern of pigmentation is denser closer to the medulla, whereas in human hair it’s usually denser closer to the cuticle.

18. She probably died around the 18th of August. By dividing .44 (the amount hair grows each day) into 8 (the amount her hair had grown), you get 18. This means that she died about 18 days after she last dyed her hair, which would be around August 18th.

19. The medullary index is .52. This means it’s animal hair, since human hair tends to be .33 or less.