Chapter 5: Hair Test Flashcards
(46 cards)
T/F, Two head hairs from the same person may have different structural features.
True
T/F, There is no way a hair can be individualized.
False
T/F, Scales always point toward the tip of the hair.
True
T/F, Analytical testing methods can detect drug use by examining hair.
True
T/F, Scales are found on the cortex.
False
T/F, Hair can show a false positive for drugs if the person has been around someone smoking crack.
True
T/F, some hair would also be considered fibers.
True
T/F, The absence of melanin creates gray or white hair.
True
T/F, The hairs found in Asians and Native Americans would be crescent moon shaped in cross-section.
False
T/F, it is fairly easy to determine the body area from which a hair came.
True
T/F, age of an individual can be determined from hair.
False
T/F, Sex determination from hair cells is considered to be a routine forensic technique.
False
T/F, A hair forcibly removed will usually have follicular tissue attached.
True
T/F, DNA may be found in the hair root and can be used to determine individual characteristics.
True
Microscopic examination of hair can determine…
(a) whether or not the hair is human or animal.
Generally, a human hair can be distinguished from an animal hair by examining…
(b) The medulla
Human hair found at a crime scene is most likely to be in the….
(d) any of these phases
The racial origin of a hair can be determined…
(b) sometimes.
Human hair can be characterized by having a medulla that is…
(a) less than 1/3 of the hair diameter
Nuclear DNA can be identified from…
(b) the hair root or follicle
An unidentified hair is examined and found to have been dyed. The dye begins 3 cm from the root. This indicates that it was dyed…
(c) three months ago.
In a cross section, the hair of an African American would look…
(b) crescent moon
This root probably came from a…
(b) cat
This medulla patterns would be considered…
(c) continuous
