Forensics chapter 6

Delta

A small triangular region found on a fingerprint

No

Can fingerprints be altered

10 weeks

Finger prints are formed at

Patent fingerprints

Visible prints left on a smooth surface when blood, ink, or some other liquid comes in contact with the hands and is then transferred to a surface

True

Fingerprints are a result of oil and secretions from skin mixing with dirt

False

Fingerprints are considered to be class evidence

False

Fingerprints are formed deep within the dermis layer of the skin

False

Fingerprints of the left hand are mirror images of the fingerprints on the right hand

Latent fingerprints

Hidden prints caused by the transfer of oils and other body secretions onto a surface

Plastic fingerprints

Indentations left in some soft material such as clay or putty are

False

It is necessary to obtain a full print from a suspect in order to match his fingerprint with a fingerprint found at the crime scene

True

Loops are the most common form of fingerprints

False

Plastic prints must be dusted or treated in order to identify the ridge patterns

True

Similar print or ridge patterns can also be found on the toes

Loops whorls and arches

The three main types of fingerprints are

False

The type of powder used to dust prints will vary depending upon the weather conditions when the print is lifted

Humans make mistakes

The use of fingerprints in identification is not perfect because