Trace Evidence - Hair and Fibers

Question 1

Trace evidence is predominantly

Answer 1

class evidence

Question 2

will produce ~90 degree angle at distal end of hair

Answer 2

scissor-cut

Question 3

true or false: hairs decompose

Answer 3

false

Question 4

hair that is ___ will often curl up, have bubble present, and smell really bad

Answer 4

burnt

Question 5

dark band that appears near the root of the hair coming from a decomposing body

Answer 5

post-mortem root band

Question 6

splitting of the distal end of the hear

Answer 6

split ends

Question 7

true or false: drug use will show in the composition of the hair cuticle, shaft, or medulla

Answer 7

true

Question 8

crown-like scales; humans rarely have them, but they are common in rodents

Answer 8

coronal scales

Question 9

presence of ___ helps determine if hair was forcibly removed

Answer 9

hair follicle

Question 10

this type of root indicates it most likely came from a cat

Answer 10

frayed root

Question 11

this type of root indicates it most likely came from a dog

Answer 11

spade-shaped

Question 12

hair that has been damaged via repeated tension or excessive chemical treatments; appears like frayed rope

Answer 12

abraded

Question 13

petal-like scales; often found in cats

Answer 13

spinous scales

Question 14

width of the medulla relative to the overall width of the hair

Answer 14

medullary index

Question 15

study of hair

Answer 15

trichology

Question 16

area of hair close to scalp

Answer 16

proximal end

Question 17

true or false: microscopic hair comparison can give conclusive evidence that is absolute personal identification

Answer 17

false; only true if follicle is attached and DNA analysis is carried out

Question 18

will produce a sharp point on the distal end of hair

Answer 18

razor-cut

Question 19

hair colored with ___ color systems will produce a smoother transition color pattern

Answer 19

organic

Question 20

granules that provide the gray color in hair

Answer 20

absent

Question 21

area of hair nearer to the tip

Answer 21

distal

Question 22

medulla type with many columns of a repeating pattern; found in rabbits

Answer 22

multiserial ladder

Question 23

tip indicates the that individual recently had a hair cut

Answer 23

linear/straight

Question 24

largest portion of the shaft; gives natural hair color

Answer 24

cortex

Question 25

medullary pattern that can be fragmented, absent, continuous, or interrupted; found in humans

Answer 25

amorphous

Question 26

medulla type with a singular repeating pattern; found in cats, dogs, rabbits, and rats

Answer 26

uniserial ladder

Question 27

tip indicates that individual came into close contact with flames/high heat

Answer 27

blackened/frayed

Question 28

medulla pattern that resembles a disorganized multiserial ladder; boxier than lattice, present in cat and rat

Answer 28

vacuolated

Question 29

very small physical material that can be transferred from person to person or person and crime scene.

Answer 29

trace evidence

Question 30

aka “club,” indicates that hair naturally fell out

Answer 30

rounded

Question 31

this part must be present to conduct DNA analysis from hair

Answer 31

follicle

Question 32

hair colored with ___ products will often produce stripes

Answer 32

ammonia

Question 33

true or false: hair itself can be used for DNA analysis

Answer 33

false

Question 34

central core of the hair

Answer 34

medulla

Question 35

flattened scales; humans and other animals have this

Answer 35

imbricate scales

Question 36

true or false: ancestry can be told by hair analysis

Answer 36

true

Question 37

intricate medullary pattern that does not have a repeating pattern but has interconnected sections; found in deer

Answer 37

lattice

Question 38

distal tip that usually appears 2+ weeks after a hair cut

Answer 38

rounded tip

Question 39

famous for saying “when a person comes in contact with another person, place, or object, a cross transfer of evidence occurs”

Answer 39

Locard

Question 40

hair type that provides the most features for comparison to other hairs

Answer 40

scalp hair; pubic hair is second