WorksheetsCh. 11 Trace Evidence I- Hair
Total questions: 12
Worksheet time: 7mins
Pigment is what gives hair it's ____________.
strength
texture
color
DNA
Keratin is the protein that is the primary component of _____________.
bones
fiber
DNA
hair
What is the medulla?
the central core of the hair shaft that may be absent in some species
the protein rich structure around the central core of the hair shaft that contains pigment
the outer covering of the hair shaft that is composed of overlapping scales
part of the brain
What is the cortex?
the central core of the hair shaft that may be absent in some species
the protein rich structure around the central core of the hair shaft that contains pigment
the outer covering of the hair shaft that is composed of overlapping scales
part of the brain
What is the cuticle?
the central part of the hair shaft that may be absent in some species
the protein rich structure around the central core of the hair shaft that contains pigment
the outer covering of the hair shaft that is composed of overlapping scales
part of the fingernail
How is the structure of hair compared to that of a pencil?
While examining the characteristics of the cuticle and medulla can be important for distinguishing hairs of different species, these characteristics are not useful in differentiating between hairs of different ___________.
people
species
body parts
dogs
What is the growth phase of hair?
anagen
catagen
telogen
anaphase
What is the catagen phase of hair growth?
the initial growth phase during which the hair follicle actively produces hair
a transition stage between anagen and telogen phase of hair growth
the final growth phase in which hair naturally falls out of the skin
when cats grow a lot of hair and make hairballs
The final growth phase in which hair naturally falls out of the skin is the ________________ phase.
anagen
catagen
telogen
telophase
What is a follicular tag and in what phase of hair growth is it most likely to be found?
a translucent piece of tissue surrounding the hair shaft near the root that contains the richest source of DNA associated with hair; anagen
a translucent piece of tissue surrounding the hair shaft near the root that contains the richest source of DNA associated with hair; catagen
a translucent piece of tissue surrounding the hair shaft near the root that contains the richest source of DNA associated with hair; telogen
a translucent piece of tissue surrounding the hair shaft near the root that contains the richest source of DNA associated with hair; polymer
Jeffrey MacDonald was convicted of murdering his wife and two young children. The evidence in the case included blue threads from a pajama top found multiple places in the crime scene.
True
False
