Infection, Immunity and Forensics
Forensic Biology
Identifying the Body
Fairly easy to establish:
Diary
Bank card
Bus pass
Receipts
Forensic techniques:
Conventional fingerprinting
Found on humans and other mammals.
Unique to the individual and doesn’t change over a lifetime.
Small ridges caused by folds in the epidermis of the skin.
Ridges vary in:
Width
Length
Can branch or join together to form distinctive patterns.
Impressions are left on the surfaces we touch due to:
Sweat
Oils secreted from sebaceous glands
There are 4 main types of fingerprint:
1. Arch
Ridges rise in the centre in a general arching formation.
2. Tented arch
One up thrusting ridge tends to cut through the ridges above at right angles.
Arch rises to 45 or more.
3. Whirl
Circular pattern of ridges with at least one ridge making a 360 circle in centre
point.
4. Loop
Ridges making a looping pattern, exiting the same side they entered
1
Forensic Biology
Identifying the Body
Fairly easy to establish:
Diary
Bank card
Bus pass
Receipts
Forensic techniques:
Conventional fingerprinting
Found on humans and other mammals.
Unique to the individual and doesn’t change over a lifetime.
Small ridges caused by folds in the epidermis of the skin.
Ridges vary in:
Width
Length
Can branch or join together to form distinctive patterns.
Impressions are left on the surfaces we touch due to:
Sweat
Oils secreted from sebaceous glands
There are 4 main types of fingerprint:
1. Arch
Ridges rise in the centre in a general arching formation.
2. Tented arch
One up thrusting ridge tends to cut through the ridges above at right angles.
Arch rises to 45 or more.
3. Whirl
Circular pattern of ridges with at least one ridge making a 360 circle in centre
point.
4. Loop
Ridges making a looping pattern, exiting the same side they entered
1
