Human Hair
Animal Hair
History of Fingerprinting
Fingerprints
A Bit of Everything
100
The innermost part of a hair, although not all hairs have one.
What is the medulla?
100
It's much thicker in animal hair than in human hair. In fact, it's at least half the diameter of the hair.
What is the medulla?
100
It's the year that fingerprints were first used to sign documents!...To our knowledge.
What is 1000 BC?
100
It's the feature of a fingerprint named after the 4th letter in the Greek Alphabet, of which it resembles.
What is a delta?
100
I'm Forensic Science's most important man...You MAY have heard of me once or twice.
Who is Edmond Locard?
200
This is what must be done to determine the ancestry of a hair.
What is taking the cross-section of a hair?
200
It's photographed below and often found in cats.
What is a spinous cuticle?
200
Half cousin of Charles Darwin, he wrote the book on "Fingerprints"...literally.
Who is Sir Francis Henry Galton?
200
Shown below, this type of fingerprint is quite rare.
What is a tented arch?
200
Although they have identical DNA, identical twins won't share these.
What are fingerprints?
300
It's imbricate! And it always is for human hair.
What is the cuticle pattern?
300
It's not a snake, but it looks like one.
What is a lattice medulla?
300
In Argentina, it was this man who began devising a classification system of different fingerprints.
Who is Juan Vucetich?
300
It's the most common type of fingerprint, with only 1 delta.
What is a loop?
300
This part of your body is special too! They leave prints, much like your fingers do.
What are lips?
400
It's the protein that makes up the hair shaft...and your fingernails.
What is keratin?
400
It's often found in rabbits, and some rodents.
What is a uniserial medulla?
400
I'm the man that first used microscopes to look at fingerprints and I discovered they all had either loops, arches, or whorls.
Who is Marcello Malpighi?
400
It's pictured below, don't let it throw you for a loop.
What is a double loop whorl?
400
All mammals have it, even dolphins and whales. In humans, it can be evidence if it leaves a trail.
What is hair?
500
Found in the shaft of the hair, this material is of utmost important in linking hair to an individual.
What is nuclear DNA?
500
In the cortex of the hair; this may change several times along the length of just one hair.
What is the pigment?
500
This system of classifying fingerprints was used for identification purposes in many countries until recent years.
What is the Henry Classification System?
500
It's the ridge characteristic pictured below.
What is a lake (enclosure)?
500
A long time ago, a eukaryote ate a bacteria. Now you have this...it's the same as your mother's, and her mother's, and her mother's, and her mother's.
What is mitochondrial DNA?